Boar

Boar is a demon found in Iris and the Giant.

"Jumping happily on its anvil, this boar forges armors for its friends."

Location
In Path of the Giant, Boars appear on Floors 2B & 9B on all difficulties, and Floors 3B, 6, 6B, 13 & 15 on Nightmare difficulty.

In Path of the Ferryman, they appear on Floors 6, 7, 11B, 19, 23 & 24 on all difficulties, and Floors 2, 16 & 20 on Nightmare difficulty.

Strategy
Each turn the Boar will give 1 Armor to two random demons on the battlefield. Once defeated, it will leave behind its Anvil.