Bio Of sleepmaster

No one knows the true name of the SleepMaster, only what he will let on.....So i write Only what he has let on......He used to be a former boxer and mma amateur fighter and was undefeated and one night was appoached before his match by a few member of the mob who ask him to throw that nights fight, he refused and threw them out his locker room, later that night (after he won the fight) he was opening his car and heard someone approaching and turned around to a two by four with a nail sticking out at the end too his face. Now he wears his mask and goes by the name sleepmaster because a trainer called him that after knocking an opponent out in 4 seconds