Leader Willem
boss
Updated: Jan 19, 2026

Borderlands 4Leader Willem

Borderlands 4
  • Source Type
    Boss
  • Location
    Grindstone of the Worthy
  • Quest Type
  • Quest Giver
Note:

The Excrucible - Point of Interest

Complete these Quests to make Leader Willem farmable:

  • Enter the Electi Part 1 & 2
  • The Council Divided
  • The Mole's Gambit
Description:

Leader WillemLocation & Map

Grindstone of the Worthy

Grindstone of the Worthy

Grindstone of the Worthy

Leader WillemLoot Pool

Leader Willem - Quest Rewards

Shotgun
Rainbow Vomit

Rainbow Vomit

  • Leader Willem
    9%
Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%
Pistol
Zipper

Zipper

  • Leader Willem
    9%
Bonus Chance: +2% × UVH
Phosphene: 0.3% + 0.1% × UVH
Big Encore: 30%, Phosphene: 1.5%
Grenade
Firepot

Firepot

  • Leader Willem
    9%
Bonus Chance: +2% × UVH
Big Encore: 30%

Sources in Grindstone of the Worthy

Fractis
boss

Fractis

Boss
Leader Willem
boss

Leader Willem

Boss
Skull Orchid
boss

Skull Orchid

Boss

Leader Willem related Sources

Leader Willem doesn't have any related Sources entered!