User blog comment:Ldoe122/Highest damage hit/@comment-27921889-20171228194809

I believe the highest hit can be Bane/Luchador 's Rage Slam when equipped with the infamous SP1 setup (Cloak, Gauntlets, Knives). When the opponent is stunned a single SP1 from Bane can easily deal over 400,000 damage.

However, for me, personally, the highest damage I have ever dealth in a single hit is with Batman/Blackest Night's Super Move (The Dark Knight). When he was max leveled and max augmented with the Militarized Batmobile. The damage dealt was over 425,000 when the opponent was at about 1 health which makes Batman deal 200% damage on all attacks.