Dr. Caust

Dr. H. Caust is the man in charge of the Reaper Facility. He wears a mask and has a very nasal voice. He speaks French. He appears to be more dignified, reserved, and self-controlled than his men, often leading them effectively with his orders. He drinks a caffeinated fruit beverage from Lautrec to stay awake.

Dr Caust talked with Roze about organization orders and sent a reaper destruction squad against Amelia. She easily killed the squad and spared his life, walking past him.