Solomon Grundy is a reanimated corpse stemming from a cursed place near Gotham City called Slaughter Swamp. He has had many appearances in which he had different levels of strength and intelligence, once surpassing even Superman in power level.
Solomon Grundy appears in 374 issues
He has been a member of the Black Lantern Corps, Injustice League, Injustice Society, Secret Society of Super-Villains and Suicide Squad. Solomon Grundy was created by Alfred Bester and Paul Reinman, first appearing in All-American Comics #61. (1944)