Psycho Killer 2 (Pyrus)
Making his first appearance in I Blame Danny in the first comic: Psycho Killer 2 can be seen holding an explosive device whilst guarding the entrance to his gang's base of operations. He and Psycho Killer 1 were the only survivors of a gang war between the two rivalling groups. That rivalry remained even after the psychos were hired by Danny as gunners.
For years Psycho Killer 2 had only been known as Psycho Killer 2, but after Psycho Killer 1 stopped shaving his head, he (Psycho Killer 1) received the nickname "Hairy" (Harry). Pondering if a name would also help him score more with the ladies, Psycho Killer 2 decided to use only flame-based weapons from that point on. He was expecting the name he received: Pyrus (though he was also expecting "Pyro").