Serial Killer (Name unknown)

Info
Not much is known about him, what is known is that he is a killer attempting to "cleanse" the world of evil. In the episode "Paging Doctor BitchFace" he made his first appearance and dismembered a young girl. He is the main antagonist in the "I Lost Her" and "He Found Her" episodes in the series. He is responsible for the murders of Sylvia and Jimmy Regaysi, He also shot Kasinski in the stomach.

Connection to Nigbone
He does not ever meet Nigbone in person but he has called him several times telling Nigbone that he's his "chosen one". He was found also in the Cafe Baltic when he was eaves dropping on Nigbone when he found out Jimmy Regaysi's address.