ES
Rat King

Rat King build & guide

Patch 2026-09-26

S
Win rate60.0%
Pick rate43.1%
Matches270,555
Create a Rat King build

Is Rat King good right now?

Rat King sits in tier S (#1 of 39): one of the best picks in the meta. They win 60.0% of their matches and appear in 43.1% of them (270,555 matches on patch 2026-09-26).

The best-performing build right now is a tank build: "NA #1 RAT KING - Shmuck", at 64.9% over 399 matches. If you prefer a hybrid style, "RAT KING [ LIGHTBRINGER ]" sits at 56.1%.

Rat King does especially well against Mirage, The Doorman and Pocket and struggles most against Paige (53.5%) and Victor. Their best teammate is Victor.

Written from match statistics; updated daily.

The cryptid ruler of the New York Warrens, The Rat King towers over his subjects in size, strength, and ambition. No longer content with hiding underground, the king has revealed his bold vision for a future where he and his subjects can walk the surface without fear of the pest control vans that roam the streets of New York (or as the rats call them: human death squads) Step 1: Take control of Long Island Step 2: Declare Long Island as the new sovereign nation of Ratannia Step 3: Execute every human that refuses to leave this new rat utopia But air tight as this plan is, the king of rats didn't want to take chances: and so he’s decided to the summon the patron to help hedge his bets.

Best Rat King builds by win rate

Alternative · Hybrid56.1%
RAT KING [ LIGHTBRINGER ]114 matches · 105 players · In-game build ID: 840354
  • Superior Cooldown
  • Siphon Bullets
  • Juggernaut
  • Colossus
  • Transcendent Cooldown
  • Frenzy
Another option that also wins, in a different style when there is one.

Real builds published in-game, ranked by win rate over the last 14 days. When a better one appears, it takes its place automatically.

Most winning ability order

  1. 1Rat Swarm+1
  2. 2Rat Swarm+2
  3. 3Scrap Grenade+1
  4. 4Royal Pestments+1
  5. 5Royal Pestments+2
  6. 6Royal Pestments+3
  7. 7Rule, Ratannia!+1
  8. 8Rule, Ratannia!+2
  9. 9Rule, Ratannia!+3
  10. 10Rule, Ratannia!+4
  11. 11Royal Pestments+4
  12. 12Scrap Grenade+2
  13. 13Scrap Grenade+3
  14. 14Scrap Grenade+4
  15. 15Rat Swarm+3

Win rate: 74.8% · 998 matches

Items with the highest win rate for Rat King

Early (< 10 min)

  1. Sprint Boots184,015 matches · ~10 min60.5%+0.5 pp
  2. Extra Health217,494 matches · ~9 min60.4%+0.4 pp
  3. Monster Rounds152,188 matches · ~5 min60.4%+0.4 pp
  4. Opening Rounds234,973 matches · ~7 min60.2%+0.2 pp

Mid (10–22 min)

  1. Duration Extender35,763 matches · ~21 min64.9%+4.8 pp
  2. Arcane Surge23,318 matches · ~17 min63.5%+3.5 pp
  3. Extra Stamina19,981 matches · ~14 min62.5%+2.5 pp
  4. Compress Cooldown77,306 matches · ~20 min62.3%+2.3 pp

Late (22+ min)

  1. Divine Barrier4,048 matches · ~35 min69.2%+9.2 pp
  2. Diviner's Kevlar24,879 matches · ~32 min68.3%+8.3 pp
  3. Guardian Ward3,693 matches · ~28 min68.7%+8.7 pp
  4. Hunter's Aura23,179 matches · ~24 min65.9%+5.9 pp

Items bought late win more partly because only players who are already ahead can afford them; compare items within the same timing column.

Rat King counters and synergies

Strong against

  1. Mirage19,080 matches65.7%
  2. The Doorman26,293 matches65.6%
  3. Pocket34,913 matches64.9%
  4. Paradox36,493 matches64.6%
  5. Mina49,058 matches64.3%

Weak against (counters)

  1. Paige48,866 matches53.5%
  2. Victor56,168 matches54.1%
  3. Graves54,310 matches54.4%
  4. Seven40,831 matches54.6%
  5. Haze56,766 matches55.9%

Best teammates

  1. Victor20,126 matches68.0%
  2. Graves59,594 matches65.9%
  3. Paige58,290 matches65.3%
  4. Kelvin19,506 matches64.3%
  5. Seven54,276 matches64.2%

Rat King's win rate in full matches against or alongside each hero, adjusted for sample size. Minimum 200 matches per pair.

See every Rat King matchup →

Best Rat King players →

Top Rat King builds

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Abilities

Scrap Grenade

#1 · Cooldown 26s

Throw a grenade of scrap that detonates multiple times, dealing bullet damage and applying slow. The grenade can be meleed to knock it away.

  1. 1 AP Cooldown: -8s
  2. 2 AP Detonation Damage: +70
  3. 5 AP Detonations: +1 · Big Detonation Damage: +300 · Big Detonation Damage: +1.0 · Big Detonation Radius: +14mm · Big Detonation Radius: +1m · Big Detonation Move Speed: +0.12%

Rat Swarm

#2 · Cooldown 24s

Call forth a swarm of rats that leap onto enemies, dealing spirit damage over time and reducing their bullet resist with every bite. The more rats are attached, the faster they will bite the target. Enemies can have multiple rats attached, but can shake off a rat early by performing a ground or air dash.

  1. 1 AP Charges: +1
  2. 2 AP RatSwarmCols: +2 · RatSwarmRows: +1 · RatSwarmWidth: +100 · Debuff Duration: +4s
  3. 5 AP Bullet Resist per Bite: -1% · Damage per Bite: +8

Royal Pestments

#3 · Cooldown 22s

Adorn scrappy armor, gaining barrier based on your max health. As long as the armor holds, bullets have a chance to be deflected back towards the attacker. The barrier does not benefit from resists.

  1. 1 AP Duration: +4s
  2. 2 AP Bullet Return Chance: +15% · Cooldown: -8s
  3. 5 AP Max Health as Barrier: +10% · Damage Cap: +250

Rule, Ratannia!

Ultimate · Cooldown 160s

Charge up and summon the banner of Ratannia, granting all nearby allies increased move speed, immunity from slows, and reduced incoming damage while near the banner.

  1. 1 AP Move Speed: +2m m
  2. 2 AP Flag Duration: +5s · Radius: +8mm
  3. 5 AP Damage: +150 · Damage Reduction: +10%

Base stats

Base statsScaling (per boon)
Health800+50
Health regen2—
Move speed6.8 m/s—
Sprint speed1.6 m/s—
Stamina3—

Stats for patch 2026-09-26. Game data from the community Deadlock API. Data since September 26, 2026 · refreshed every 6 h