Chief Grimden
From Nevergrind Wiki
Chief Grimden is the Final Boss of Act 1. He appears in the Lanfeld Outpost 3 zone after completing the prerequisite portion of the quest Grimden's Gambit. As with most other bosses he has innate Crowd Control Reduction through the Dauntless Affix and is immune to Charm spells. He is level 20 on Normal Difficulty, 60 on Nightmare and 79 on Hell.
Abilities and Affixes
Normal
On Normal Difficulty Chief Grimden casts the spells Envenom and Poison Cloud and also has the ability Bash which stuns.
Nightmare
On Nightmare Difficulty Chief Grimden gains the Poison Enchanted and Poison Resistant Affixes as well as the spell Barrier.
Hell
On Hell Difficulty Chief Grimden gains the Shredding Aura Affix.