A rich old man named Patrick Avarice wanted to gain profit off of communicating with the dead and discovering what the afterlife is really like. he has tried several methods before slowly growing more sadistic and cold-blooded each attempt to talk to the dead to the point where he forces volunteers to die for his experiments. after an accidental spill of chemicals, people began getting corrupted. Patrick found that the monsters that the spill made could be easily manipulated to fight for him... he's grown a horrible god complex...
Credit to SFSG @AKALuke04 for Corruptbox Note: I’m closing comments so you guys aren’t filling my notifications with comments, sorry