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Kelvin portrait Rat King portrait

Kelvin vs Rat King

Extreme threat

Written for the Kelvin player. Playing Rat King? See Rat King vs Kelvin →

Rat King is favoured. Kelvin wins 46.4% of 64,910 games against Rat King (-7.3 points vs Kelvin’s usual 53.7%).

How to win as Kelvin

  1. RuleDo not commit before Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds is gone. Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds first — poke him until he armours up, then hold your gun until the 6 seconds are over; without it he has no defensive button left
  2. Watch out Rat Swarm Rat Swarm 50m Range6s Duration24s Cooldown Rat King calls a swarm of rats to a spot up to 50m away. Damage 8 spirit damage per bite (+0.08 Spirit scaling), one bite per attached rat… 1 +1 charge (8s between charges) 2 a larger swarm and +4s debuff duration 5 +8 damage and an extra -1% bullet resist per bite strips 1% Bullet Resist per bite and keeps biting faster as more rats land, so the longer you fight covered in rats, the harder every gun on his team hits you
  3. Your edgeYou recover between fights and they do not (Kelvin 3/3 against Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 1/3).
  4. Buy Alchemical Fire Alchemical Fire 3,200 souls · Tier 3 · Weapon · Press +30s Cooldown +5s Duration +0.2s Cast Delay +10 Spirit Power — Buy for zone denial and faster objective damage, or to punish enemies who must hold a choke. Aimed at Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction in this lineup.
The numbers: lane, whole match and Oracle and above
GamesKelvin winsvs Kelvin's usualSample
Whole match 46.4% -7.3 pts (53.7% overall) 64,910 games
Sharing a lane 46.2% -7.5 pts (53.7% overall) 21,231 games
Oracle and above 48.1% -5.5 pts (53.6% at Oracle+) 5,553 games

"Sharing a lane" counts only games where both were assigned the same lane — the laning matchup itself. "Oracle and above" counts only matches whose average rank was Oracle and above. Source: deadlock-api.com, refreshed daily.

Data-supported Measured: you win 46.4% of these, which is 7.3 points below your overall win rate (64,910 matches). The kit-based model reads this as low instead — treat the measured number as primary and the gap as a sign this matchup is more about execution than kit. Ranked against this hero's own baseline win rate, not raw win rate. Source: deadlock-api.com.

Why Rat King counters Kelvin

Kelvin has no hard crowd control, only slows, and Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction makes allies immune to slows while they move faster. That turns Frost Grenade Frost Grenade 30s Cooldown Lobs a grenade that bursts into a freezing cloud, healing allies caught in it while dealing spirit damage and cutting enemy movement speed. Crowd Control movement slow on enemies; Damage about 60 spirit at base, with a matching heal of about 60; Defensive the primary heal in his kit outside the ultimate, and the stamina freeze… 1 +30 damage and +30 heal 2 about -10s cooldown and freezes enemy stamina regeneration 5 +2m radius with improved spirit scaling and Arctic Beam Arctic Beam 5s Duration28s Cooldown Channels a beam of freezing energy in front of him that damages targets and progressively cuts their movement speed and fire rate the longer it stays on them. Crowd Control ramping movement speed and fire rate reduction; Damage about 45 damage per second at base; Mobility none — it constrains his own movement while he holds it 1 about -20% fire rate and move speed on targets 2 about +20 DPS with improved spirit scaling 5 about -13s cooldown and fires 2 additional beams at targets within 10m into plain damage, and the banner's Knockup catches Kelvin before Frozen Shelter Frozen Shelter Freezes the air around himself or a targeted hero, raising an impenetrable dome. Crowd Control heavy slow on enemies caught inside Defensive about +90 health regeneration and full protection from outside fire; 1 purges non-ultimate debuffs and adds about +65 health regeneration with improved spirit… can go up.

Written from both heroes' ability data; the win rates above are the measured results.

What should I do right now?

Do

  • Plan for Alchemical Fire Alchemical Fire 3,200 souls Tier 3WeaponPress +30s Cooldown +5s Duration +0.2s Cast Delay +10 Spirit Power — know which tier it sits in so you are not improvising at the shop.
  • Know what Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds looks like. It is the cooldown this lane revolves around.

Avoid

  • Walking to lane on the same path every wave against a hero with Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's engage range.

Do

  • No movement ability: once Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds is down he cannot escape a gank except on foot
  • His slow projectiles fall off from 20m, so a laner who stays at range and strafes out-trades his gun
  • Frost Grenade Frost Grenade 30s Cooldown Lobs a grenade that bursts into a freezing cloud, healing allies caught in it while dealing spirit damage and cutting enemy movement speed. Crowd Control movement slow on enemies; Damage about 60 spirit at base, with a matching heal of about 60; Defensive the primary heal in his kit outside the ultimate, and the stamina freeze… 1 +30 damage and +30 heal 2 about -10s cooldown and freezes enemy stamina regeneration 5 +2m radius with improved spirit scaling heals his lane partner and chips the enemy in one throw, which wins attrition lanes outright

Avoid

  • Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow clears a trooper wave in three hits and slows anyone farming in it, so he wins wave tempo early
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds lets him take a trade or tower shots that other brawlers cannot, and reflects part of a long poke trade

Do

  • Their first real spike is ult unlock — respect it from that point, not before.
  • Your spike is ult unlock: Frozen Shelter Frozen Shelter Freezes the air around himself or a targeted hero, raising an impenetrable dome. Crowd Control heavy slow on enemies caught inside Defensive about +90 health regeneration and full protection from outside fire; 1 purges non-ultimate debuffs and adds about +65 health regeneration with improved spirit… immediately becomes the best defensive cooldown on either team and defines every objective fight

Avoid

  • Taking an even fight against Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. on their spike timing when you could take the same fight ten minutes later on yours.

Do

  • Watch for Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction . Back out of the 20m circle when the banner is planted and re-engage when it falls, 12 seconds later
  • Dash as soon as the rats land — every ground or air dash shakes one off, and the bullet-resist shred falls off 4 seconds after the last bite

Avoid

  • Spending your own escape before Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds is on cooldown.

Rat King’s abilities

  • Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction Ultimate

    Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's fight-ender: Knockup and a 40% slow on the slam, plus Rat Swarm Rat Swarm 50m Range6s Duration24s Cooldown Rat King calls a swarm of rats to a spot up to 50m away. Damage 8 spirit damage per bite (+0.08 Spirit scaling), one bite per attached rat… 1 +1 charge (8s between charges) 2 a larger swarm and +4s debuff duration 5 +8 damage and an extra -1% bullet resist per bite from the rats it releases.

    • Back out of the 20m circle when the banner is planted and re-engage when it falls, 12 seconds later
    • Spread out as he approaches with the banner raised — the slam hits everyone in 20m
    • Save your slows for after the banner; use knockdowns, stuns or disarms against his team while it is up
  • Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow Ability 1

    This will not kill you on its own — it makes sure you cannot leave while the rest of Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's kit does. 20% movement slow for 4s (scales slightly with Spirit).

    • Walk out of the 8m circle after the first detonation instead of trading inside it — staying costs you all three hits
    • Melee the grenade away when it lands next to you
    • Debuff Reducer Debuff Reducer 1,600 souls Tier 2ArmorPassive +25% Debuff Resist +90 Bonus Health or a dispel shortens the slow, which is what turns the grenade into a kill
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds Ability 3

    His survival button and the reason he can walk into a fight first. It also makes gun trades into him expensive for as long as it is up.

    • Pop the barrier with Spirit Damage, or stop shooting and wait out the 6 seconds before you commit your gun
    • Bait it with poke first; with it down he is an 800-health brawler with no movement ability
    • Against Tier 3, spread your damage over several hits — one huge hit gets capped at 250
  1. 1 Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds

    Royal Pestments first — poke him until he armours up, then hold your gun until the 6 seconds are over; without it he has no defensive button left

  2. 2 Rat Swarm Rat Swarm 50m Range6s Duration24s Cooldown Rat King calls a swarm of rats to a spot up to 50m away. Damage 8 spirit damage per bite (+0.08 Spirit scaling), one bite per attached rat… 1 +1 charge (8s between charges) 2 a larger swarm and +4s debuff duration 5 +8 damage and an extra -1% bullet resist per bite

    Rat Swarm second — once it is on cooldown (24s since 5 October) your dashes are free for positioning instead of shaking rats

  3. 3 Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow

    Scrap Grenade last — it is the easiest to sidestep or melee away, and it is his only slow outside the ultimate

The matchup in detail

  • No dash, leap or blink — once his barrier is gone he is easy to catch and kite Strategic
  • Slow projectile spreadshot with falloff from 20m; long-range heroes can stay out of his damage Strategic
  • Most of his kit is Bullet Damage, so one bullet-resist item answers most of it Strategic
  • Neither of you deletes the other, so this matchup is decided by multipliers rather than damage. Resists stack multiplicatively, which means your fourth resist item buys much less percentage than your first; shred is subtracted from the total afterward, which means it is worth more the tankier they get; and healing reduction stacks multiplicatively too, so a second anti-heal source on top of a first is worth far less than the first. The efficient build against Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. is one anti-heal, one shred, and damage after that. Strong evidence
  • Rat Swarm Rat Swarm 50m Range6s Duration24s Cooldown Rat King calls a swarm of rats to a spot up to 50m away. Damage 8 spirit damage per bite (+0.08 Spirit scaling), one bite per attached rat… 1 +1 charge (8s between charges) 2 a larger swarm and +4s debuff duration 5 +8 damage and an extra -1% bullet resist per bite strips 1% Bullet Resist per bite and keeps biting faster as more rats land, so the longer you fight covered in rats, the harder every gun on his team hits you Strategic
  • Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow goes off three times in an 8m circle with a slow on each hit — standing in it to trade costs you all three detonations Strategic
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds sends a share of your bullets back at you, and at Tier 3 caps any single hit at 250 while it holds Strategic
  • Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction makes his team immune to slows and faster on the way in, knocks up everyone in 20m, then gives his side 15–25% damage reduction near the banner Strategic
  • He can come out of a vent: the tunnels let him rotate between lanes without being seen Strategic
  • Dash as soon as the rats land — every ground or air dash shakes one off, and the bullet-resist shred falls off 4 seconds after the last bite Strategic
  • Step out of the 8m grenade circle after the first detonation, or melee the grenade away from you Strategic
  • Break Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds with Spirit Damage, which is never reflected, or wait out its 6 seconds before you commit your gun Strategic
  • When the banner is planted, leave the 20m circle and come back when it falls 12 seconds later rather than fighting into the damage reduction Strategic
  • Buy Bullet Resist: his gun, the grenade and the banner slam are all Bullet Damage — only the rat bites are spirit Strategic
  • Fight him from range; his pellets are slow and fall off from 20m, and he has no ability to close distance Strategic
  • You have an immunity window and Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. has a burst combo, which makes this a timing matchup rather than a damage one. Their combo has a commit point; your window has to cover that point rather than open before it. Using it early is the same as not having it. Strategic
  • The 22 seconds after Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds ends (14 at Tier 2): an 800-health brawler with no escape ability Strategic
  • Right after he throws Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow : his only slow is spent, so you can walk away from him or kite him Strategic
  • While he is carrying the banner he cannot slide or crouch, which makes him an easier target for skillshots Strategic
  • In a fight he cannot reach the tunnels — keep him in combat and he has to walk out Strategic
  • Your escape route is vertical and the 09-16-2026 patch aimed at exactly that: slows now affect air drag at 35% of their value, where previously they mostly did not bite in the air. Going airborne to break Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's slow no longer restores your full movement — you carry a fraction of it into the air with you, at the moment you are also a stationary silhouette. The slow cut of ~20% partly offsets it, but the net is that air-escaping a slow is worse this patch than last. Documented
  • Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow clears a trooper wave in three hits and slows anyone farming in it, so he wins wave tempo early Strategic
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds lets him take a trade or tower shots that other brawlers cannot, and reflects part of a long poke trade Strategic
  • No movement ability: once Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds is down he cannot escape a gank except on foot Strategic
  • His slow projectiles fall off from 20m, so a laner who stays at range and strafes out-trades his gun Strategic
  • Frost Grenade Frost Grenade 30s Cooldown Lobs a grenade that bursts into a freezing cloud, healing allies caught in it while dealing spirit damage and cutting enemy movement speed. Crowd Control movement slow on enemies; Damage about 60 spirit at base, with a matching heal of about 60; Defensive the primary heal in his kit outside the ultimate, and the stamina freeze… 1 +30 damage and +30 heal 2 about -10s cooldown and freezes enemy stamina regeneration 5 +2m radius with improved spirit scaling heals his lane partner and chips the enemy in one throw, which wins attrition lanes outright Strong evidence
  • Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction unlock — Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction turns him into the team's fight-starter: slow immunity and speed on the way in, a 20m Knockup on arrival Strategic
  • Scrap Grenade Scrap Grenade 26s Cooldown Rat King throws a bouncing lump of scrap that goes off three times where it lands. Crowd Control 20% movement slow for 4s (scales slightly with Spirit). Damage 70 bullet damage per detonation (+0.6 weapon-damage scaling), three… Defensive The slow is his peel: thrown at his own feet it stops a diver from following… 1 -8s cooldown (26s to 18s) 2 +70 damage per detonation 5 one extra, bigger final detonation — 300 damage, 14m radius, 40% slow T2 — 140 damage per detonation turns the grenade from wave clear into a real trade — three hits for 420 before weapon scaling Strategic
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds T2 — The barrier comes back every 14 seconds with a 30% reflect chance, so gun trades into him stop being free Strategic
  • Royal Pestments Royal Pestments 6s Duration22s Cooldown Rat King puts on scrap armour that gives him a barrier worth a share of his maximum health. Damage Reflected bullets return their full damage to the shooter. Defensive Barrier equal to 15% of his max health for 6s on a 22s cooldown. 1 +4s duration 2 -8s cooldown and +15% bullet return chance 5 +10% max health as barrier, and no single hit deals more than 250 while it holds T3 (late game) — The 250-per-hit cap makes him very hard to burst while the armour holds Strategic
  • Frozen Shelter Frozen Shelter Freezes the air around himself or a targeted hero, raising an impenetrable dome. Crowd Control heavy slow on enemies caught inside Defensive about +90 health regeneration and full protection from outside fire; 1 purges non-ultimate debuffs and adds about +65 health regeneration with improved spirit… unlock — Immediately becomes the best defensive cooldown on either team and defines every objective fight Strong evidence
  • Arctic Beam Arctic Beam 5s Duration28s Cooldown Channels a beam of freezing energy in front of him that damages targets and progressively cuts their movement speed and fire rate the longer it stays on them. Crowd Control ramping movement speed and fire rate reduction; Damage about 45 damage per second at base; Mobility none — it constrains his own movement while he holds it 1 about -20% fire rate and move speed on targets 2 about +20 DPS with improved spirit scaling 5 about -13s cooldown and fires 2 additional beams at targets within 10m tier 3 — Two extra beams within about 10m turns his main damage from single-target into a teamfight tool Strong evidence
  • Fights against Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. recur on the objective clock — the Rift every 7 minutes from about 11:00, the Urn every 5 from 10:00 — which means the question is not whether your ultimate is strong but whether it is up for the next one. Ultimate Cooldown Reduction is a new stat introduced on 09-16-2026, first appearing on Diviner's Kevlar Diviner's Kevlar 6,400 souls Tier 4ArmorPassive +40s Cooldown +40 Spirit Power +1000 Barrier +20s Buff Duration +15% Ability Duration +10% Ultimate Cooldown Reduction at +10%. Against a team-fight hero, buying into a recurring ultimate is a different and often better purchase than buying into a bigger one. Documented
  • Your habit of taking the fight vertical to reset spacing against Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. is weaker on 09-16-2026 than it was. Slows now apply to air drag at 35% of their value, so the air is no longer a slow-free zone, and 2026 has been a steady closing of exactly these loopholes — wall jumping costs 25% stamina regeneration for 5 seconds, and knockups came under debuff reduction in May. Going up is still correct against their ground CC; it is no longer a way to ignore their slows. Documented
  • Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. wins by choosing where the fight happens. Take your position before the zoning goes down, not after — once the area is committed you are fighting on their terms, and walking in to contest it is exactly the mistake the kit is built to farm. Strategic
  • Alchemical Fire Alchemical Fire 3,200 souls Tier 3WeaponPress +30s Cooldown +5s Duration +0.2s Cast Delay +10 Spirit Power (weapon T3) — Buy for zone denial and faster objective damage, or to punish enemies who must hold a choke. Aimed at Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction in this lineup. Strong evidence
  • Scourge Scourge 6,400 souls Tier 4TechPress +35s Cooldown +10s Duration +0.25s Cast Delay +40% Spirit Resist +100 Bonus Health +20% Debuff Resist (spirit T4) — This lineup gets its unkillable frontline from Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. . Buy on supports to harden a focused ally against a caster team while adding pressure damage. Documented
  • Enduring Speed Enduring Speed 1,600 souls Tier 2ArmorPassive +25% Slow Resist +2 Out of Combat Regen Builds from Sprint Boots (vitality T2) — Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. 's Rule, Ratannia! Rule, Ratannia! 10s Duration160s Cooldown Rat King raises the banner of Ratannia. Crowd Control Knockup and a 40% slow on the slam, plus Rat Swarm from the rats it… Damage 200 bullet damage on the slam (+1.2 weapon-damage scaling), 20m radius (cut… Mobility +3 m/s movement speed for him and nearby allies for up to 10s while the… 1 +2 m/s movement speed (no cooldown reduction since 5 October) 2 +5s banner duration and +8m radius 5 +150 slam damage and +10% damage reduction is what you are buying against here. Buy when enemy slows are what is killing you — it is the dedicated answer, separate from generic debuff resist. Documented
  • The Unstable Rift capture point is a 20m circle on a bridge, capture only progresses when no enemy is inside it, and everyone standing in it is revealed on the minimap. That is a purpose-built trap for Rat King Rat King New hero Released 2 October Released 2 October. A gun-scaling brawler and team buffer: a three-blast slowing grenade, rats that strip bullet resist with every bite, a reflecting barrier, and a banner that makes his team slow-immune. . The mistake is treating the circle as the objective: you do not need to stand in it, you need them not to. Contest from outside the radius, deny with a single body at the edge, and let their Area Damage land on empty bridge. Strategic

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Sources and method for this page

Everything on this page is generated for Deadlock patch 09-29-2026 from Rat King's current kit, measured match results and a mechanics rule base. Each line carries its own confidence label.

Rat King's kit and counterplay were compiled from 6 sources, cross-checked for patch 09-29-2026. Threat ratings compare this pairing against Kelvin's own baseline win rate rather than a flat 50%, because ranking by raw win rate produces the wrong answer for heroes whose overall win rate is not 50%.

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