Sacrificial

The Sacrificial is a Fanatic enemy in Darkest Dungeon II.

Description
Short, squat and holding a giant burning cauldron above its head, the Sacrificial has a single purpose: to explode.

It spawns in the back of the enemy party and creeps forward each round. Once it makes it to rank 1, it will explode on its next turn, dealing heavy damage, Burn, and  Stress to the whole party. It starts combat with two tokens, so it may take a few turns to whittle its health down.