Rat King build guide

THE TANKIEST GUNNER [LOCKBUILDS]

by HarvesterVersion 93Updated Oct 7, 2026Guide #836698

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Observed usage

Match statistics · filters applied except game mode

Published guide

As written by the author · latest version · not affected by filters

In-game favourites: 19,867 (as last synced by the API; not match usage)

Author's notes

KEEP REFRESHING THE BUILD TO SEE CHANGES! Rat King is a complete gun hero. So using raw spirit damage items is completely useless. We need to invest on Yellow and Greens as much as possible. For more Rat King builds, visit Lockbuilds.com. Updated daily.

Item categories

1Early game
Game stage · 11 items · Buy L-R. We can focus on yellows because Rat King is tanky af. Rush to 4.8k as fast as possible.
1. 1
  High-Velocity Rounds
  The bullets have travel time. You need HVR to start.
2. 2
  Extra Regen
3. 3
  Opening Rounds
  Built from High-Velocity Rounds
  More damage. Never Sell.
4. 4
2Early gameoptional
Game stage · 6 items · Buy whatever is needed.
1. 1
  Healbane
2. 2
  Rebuttal
3. 3
  Extra Charge
  More charges for Rat Swarm.
4. 4
3CORE
Author's category · 8 items · Buy L-R. You can get Juggernaut if you want to become a bigger tank than you already are. But I prefer focusing on some DPS.
1. 1
  Ballistic Enchantment
  Makes the size the grenade explosion huge. So the more people you hit, the more gun damage you have.
2. 2
  Escalating Resilience
  Built from Extended Magazine
  Insane bullet resist along with some extra ammo and damage. If there are a lot of spirit heroes you can take Titanic.
3. 3
4Mid gameoptional
Game stage · 8 items · Get your greens!
1. 1
  Juggernaut
  Built from Enduring Speed
2. 2
  Dispel Magic
3. 3
  Titanic Magazine
  Built from Extended Magazine
  Max bullets.
4. 4
5Late game
Game stage · 6 items · If you are struggling then you can get Unstop early.
1. 1
  Transcendent Cooldown
  Built from Superior Cooldown
  Max CD for all his abilities.
2. 2
  Unstoppable
  You become unkillable at this point!
3. 3
  Witchmail
  Judging from your size you will be taking a lot of damage.
6Late gameoptional
Game stage · 4 items
1. 1
  Silencer
  Silence em all!!!!!
2. 2
  Spellslinger
3. 3
  Plated Armor
4. 4
7Testing spirit buildsoptional
Author's category · 9 items
1. 1
  Rapid Recharge
  Built from Extra Charge
2. 2
  Escalating Exposure
3. 3
  Mystic Reverb
4. 4

Categories appear in the author's order. Only the editor's default Early, Mid and Late sections are marked as game stages; the author's own categories keep their names. “Built from” links come from the game's item recipes.

Published ability order

Published ability order: unlocks and upgrades in the author's order, one row per ability in slot order
Scrap GrenadeScrap Grenade			Scrap Grenade: Ability unlocked, step 3			Scrap Grenade: 1 AP upgrade, step 6		Scrap Grenade: 2 AP upgrade, step 8