User blog comment:Nkstjoa/Official Wiki Death Battle Wishlist/@comment-5035900-20140614032800/@comment-24281142-20140614112601

While I do think it would be best to not use already existing combatants, I don't think we should insist on it. Just say "we would prefer if you suggested characters who haven't already been in a fight though" rather than "But please don't suggest characters who have already taken par in a Death Battle.