Zaixeni

An amalgamation of hundreds, maybe even thousands of human souls, all combined into one being built to kill with no memories of any lives of the souls that make up this semi-physical form. They can split apart from each other, although they are harmless by themselves. 8'3 and the deadliest thing in the obnoxiously large basement of the main building due to all of the souls being a hive mind actively trying to add to itself, but it seems scared of the other monsters as if all the souls remember being killed by them. Due to being made entirely of souls, it has no bones, and can thus twist and move in painful looking ways without feeling anything due to technically already being dead. (the color of a soul is dependent on the personality it had while alive)