Scientist Bruce Banner is known for tranforming into the unstoppable Hulk, but the Hulk has undergone many transformations of his own. For a time he was a gray-skinned enforcer in Las Vegas, using the name Joe Fixit; later, he was fused with his red counterpart to form Composite Hulk. After he was separated from Banner, a Barbarian Hulk lived among the Moloids in Subterranea, and in one possible future he will become a despotic ruler known as the Maestro. No matter his form, one fact remains: The Hulk is the strongest one there is!