King Shark is a fictional character appearing in comic books published by DC Comics. The character, also known as Nanaue, was created by writer Karl Kesel and artist Tom Grummett. King Shark's first key appearance was in Superboy #0 (October 1994) as a cameo before making his first full appearance in Superboy #9 (November 1994).[2] The character serves as an adversary to Aquaman, Batman, and Flash. The character has been adapted from the comics into various forms of media, including television series, feature films, and video games. King Shark made his live-action debut in the television series The Flash, voiced by David Hayter while Dan Payne portrayed his human form. In the DC Extended Universe, King Shark was voiced by Sylvester Stallone and motion captured by Steve Agee in the film The Suicide Squad (2021).