Fan Casting Guard Dog Monster in Blood-C: The Last Dark

A large anthropomorphic dog like monster summoned by Kutou. It has a large mouth and sharp claws. The elder bairn initially goes on a rampage, killing everything including some of the Tower's guards, but then it is killed by Saya. For this live action movie, the dog elder bairn and Kutou are two separate characters, as Kutou transformed himself into a humanoid elder bairn using a talisman (while in the anime, Kutou transformed into the giant hellhound elder bairn).