Fantastic Four: World's Greatest Heroes - Season 1 - Eps 4: Hard Knocks
Fellow scientist and friend Bruce Banner comes to Reed looking for help. But his dark secret is soon revealed - he's the Incredible Hulk! When Banner reverts to his giant green alter-ego and goes on a rampage across New York City, the Fantastic Four must stop him.
About Fantastic Four: World's Greatest Heroes

Title: Fantastic Four: World's Greatest Heroes
First Air Date: 2006-09-02
Last Air Date: 2007-10-20
Status: Ended
Rating: 7.5/10 (from 89 votes)
Language: EN
Seasons: 2
Total Episodes: 26
Network: Cartoon Network
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy, Kids
Production Companies: MoonScoop, Marvel Entertainment
Synopsis
Mr. Fantastic, the Invisible Woman, the Human Torch, and the Thing battle some of their greatest foes, including Doctor Doom, Ronan the Accuser, the Multiple Man, and Mole Man.
Cast

Hiro Kanagawa
Mr. Fantastic (voice)

Lara Gilchrist
Invisible Woman (voice)

Christopher Jacot
Johnny Storm (voice)

Brian Dobson
Ben Grimm (voice)