Solomon Grundy

Cyrus Gold, later and better known as Solomon Grundy and the Marshland Monster, is a commonly faced foe of the Justice League, specifically Batman.

Grundy was once a wealthy gentleman named Cyrus Gold, who was blackmailed by a prostitute and murdered by her pimp before having his corpse dumped into an eerie bog named Slaughter Swamp. Years later, Gold was supernaturally resurrected where he was said to have haunted the swamp and killed anyone who neared. In most incarnations, something pushed him into rising out of his muddy grave, usually a pair of criminals accidentally awakening him, where he then begins a life of crime and destruction.

Batman: Arkham City
When the Penguin bought a large museum as a hideout for himself and his army of henchmen, he found the large hulking beast Solomon Grundy lurking under it. It is unexplained how Grundy got down there. The Penguin then had the monster chained up and used his bulk for extremely dangerous situations. One of these situations was when Batman hunted for the Penguin as well as Doctor Victor Fries, better known as Mr. Freeze.

When Batman had Penguin nearly beat, the latter exploded the floor under the Dark Knight, dropping him into Grundy's resting place. Awakening Grundy with a violent series of shocks, Penguin spectated as the zombie and vigilante had a brutal showdown. Batman defeated Grundy by "killing" him; ripping his exposed rib-cage open and beating his supernatural heart until it was just a glowing pulp. While Grundy was never seen again, he likely resurrected himself afterwards.