Barney

Barney is a humanoid creature resembling a rabbit. He has white fur and long white bunny ears. He has a brown mustache covering his mouth and black eyes. He wears only brown plaid pants and a biret-like hat the same color as the pants.

If you tell him, "Sorry, but there's no coffee right now," his eyes will change. They'll turn completely black with white pupils. A fanged mouth will appear, and he'll pull a knife out of his pocket.