When Arisen Tyrk was deposed as God-King of the extradimensional Other Realm, he fled through a damaged portal that split him into various fragments. Some of Tyrk’s sentient fragments landed on Earth and plagued the Defenders as the crazed Lunatik vigilantes while another fragment became drama professor Harrison Turk. He retained most of Tyrk’s personality and memories. He became a professor at Empire State University and was a roommate of Dollar Bill.