Hellhounds are a type of zombie featured in Shi No Numa, Der Riese, and Kino der Toten. Unlike regular zombies, they don't down the player until they are hit three times.
CreationEditHellhounds were an accidental creation by Group 935 scientist, Ludwig Maxis. Maxis put his daughters dog into the teleporter but it came out the mainframe a Hellhound. Maxis was then was aware of the animal's pregnancy. When Samantha Maxis, the owner of the dog, questioned him about it, Edward Richtofen, Maxis' assistant, left the room and locked the door behind him. Fluffy then appeared and supposedly killed the two. Fluffy then gave birth and created more Hellhounds.
Hellhounds made their first appearence at Shi No Numa and reappeared at Der Riese and finally in Kino der Toten. The Hellhound has recently been replaced by several other bosses, such as the Pentagon Thief and Space Monkeys.