Billy just wanted to take a zombie nap, however, some idiotic necromancer tried to revive him. The outcome was an awqward situation with Billy being split into half. Caught in astonishment, Billy did not realize that he was regenerating and eventually both Billys stood next to each other - completely regenerated.
Since then the two Billys with identical minds excel with their brilliant teamplay in most of their matches. The result for the necromancer was not as positive for Billy(s) threw him into a brawl during a Lizardman-vs.-Orc-Match. Recently he is called "Blamer" and became the official decoy of "Deadman Raises".