User blog comment:AgentHoxton/Custom Death Battle: Sonic VS Lilac/@comment-86.174.161.210-20141223180627/@comment-26367254-20141223182932

Except it makes sense since he's a winner of a previous Death Battle - that's what happened to Leonardo in both the TMNT Battle Royale, which he then went on to face Zitz from Battletoads (and won).

A character can come back for another Death Battle, winner or loser, if Batman's taught us anything at the least.