Walter Carradine was an ordinary criminal and crime partner of Flint Marko, adoptive father of Felicia Hardy and the direct killer of Ben Parker. He was a long-hidden alternate personality of his true identity, the serial killer Cletus Kasady, later known as Carnage. Despite not being a main antagonist towards Spider-Man initially, he can be considered one of the most influencing characters in the series, since he serves as the creator of the heroism in Spider-Man.