Butch Gilzean (NathanJohnson)

Butch Gilzean was the former underling of Fish Mooney and Oswald Cobblepot and a mobster operating in Gotham City. He was later murdered, but ended up being resurrected by Professor Hugo Strange and became Solomon Grundy.

Anarky: Broken Bird
Butch Gilzean and his gang broke into the mansion of Oswald Cobblepot. At this point Oswald lost his position as mayor of Gotham, and without his mother, father and best friend Edward Nygma resorted to binge eating and alcoholism, and had transformed from a skinny man into a grotesquely obese individual. Wanting retribution for Oswald's past actions Butch and his gang cut Oswald's fingers off, then proceeded to brutally beat him. They finished off by glassing Oswald in the game with a bottle, with the bottom ending up embedded in his eye. Butch and his gang left a crumpled, humiliated and bloodied Oswald on the floor, with Butch declaring "the bird is broken".

Anarky: Solomon Grundy
After Oswald recuperates from his attack (although is left disfigured and ugly looking) he plots revenge. Butch is kidnapped and brutally beaten to death by Oswald, who then orders Butch's corpse to be dumped on a swampland.

Butch's corpse is later recovered by his former friend Fish Mooney, who brings it to a secret lab operated by Hugo Strange. Strange is working on perfecting the ultimate army for Fish to take back the city of Gotham. She says that she wants Butch as her right-hand man once again, and that she wants Strange to transform him into something marvelous, but at the same time something that will obey her without question. Strange manages to resurrect Butch from the dead, but side-effects cause Butch's skin to turn pale blue, his eyes white and hair floppy and grey.

Kept prisoner
Penguin shot dead Butch in order to get revenge on Tabitha Galavan for killing his mother years prior. Whilst Tabitha believed that Butch was dead for good, Penguin hired Hugo Strange to secretly revive Butch from the dead, but on the condition that his memories are permanently wiped and he is now Solomon Grundy for good. Penguin kept Grundy underneath his new Iceberg Lounge bar.

Second revival
Hugo Strange recovered Butch and felt he had too much "potential" to be simply discarded. It turned out he had injected Butch with a serum during his previous operation which helped Butch revive from the dead after being fatally shot by Penguin. Strange chose not to disclose this to Penguin or Tabitha, and kept Butch imprisoned to be further experimented on. During the No Man's Land incident Butch was kept captive, and overtime regressed and his Grundy personality returned.

Grundy, along with Killer Croc, were recruited by Jervis Tetch years later in a bid to wipe out the Parliament of Owls. After killing the header of the society Owl-Man, Tetch allowed both Croc and Grundy to get away before the police arrived. Grundy and Croc left Gotham together and opened up a beach house.