Skaar

Skaar is a fictional superhero appearing in American comic books published by Marvel Comics. The character is usually depicted as a supporting character to Hulk. He is the son of the Hulk and the extraterrestrial Caiera, who conceived him during the “Planet Hulk” storyline. Created by writer Greg Pak and artist John Romita Jr., he first appeared in What If? Planet Hulk #1 (cover-dated Dec. 2007).
Skaar made his animation debut in the animated series Hulk and the Agents of S.M.A.S.H..