I am the ultimate self-induced mutation-- the living embodiment of the unknown-- of that which scientists have ever called "X"! I am the X-Man! 
Appearing in "What If the Hulk Had The Brain of Bruce Banner?"
Featured Characters:
- X-Man (First appearance)
- Hulk ⏵ (First appearance)
- Mister Fantastic (First appearance)
- Professor X (First appearance)
Supporting Characters:
- Rick Jones (First appearance)
- Betty Ross (First appearance)
- General Ross (First appearance)
- Fantastic Four (First appearance)
- Thing (First appearance)
- Invisible Girl (First appearance)
- Human Torch (First appearance)
- Alicia Masters (First appearance)
Antagonists:
- Igor Drenkov (First appearance)
- The Gargoyle (First appearance)
- Loki (First appearance)
- Galactus (First appearance)
Other Characters:
- Uatu
- Hulk (Earth-616)
- Rick Jones (Earth-616)
- General Ross (Earth-616)
- Zeke
- Avengers (Earth-616) (Cameo)
- Thor (Earth-616) (Cameo)
- Ant-Man (Hank Pym) (Earth-616) (Cameo)
- Wasp (Janet van Dyne) (Earth-616) (Cameo)
- Iron Man (Tony Stark) (Earth-616) (Cameo)
Races and Species:
Locations:
- Earth-616
- Earth
- United States of America
- California
- New Mexico
- Gamma Test Site
- United States of America
- Earth
- Earth-774 (First appearance)
- Earth (First appearance)
- United States of America (First appearance)
- New Mexico (First appearance)
- Gamma Test Site
- New Mexico (First appearance)
- Bruce Banner's Cabin
- The Banners' Hulk-Proof Home
- New York (First appearance)
- New York City (First appearance)
- The Baxter Building (First appearance)
- New York City (First appearance)
- United States of America (First appearance)
- Asgard (First appearance)
- Isle of Silence (First appearance)
- Earth (First appearance)
Items:
- Gamma Bomb
- .38 Caliber Revolver
- The Psychotron (Not the same one as in Avengers #41)
- Cerebro
Vehicles:
- Banner, Richards, and Xavier's Airship
Synopsis for "What If the Hulk Had The Brain of Bruce Banner?"
Bruce Banner, Reed Richards and Charles Xavier constructed an improved version of Cerebro called the Psychotron which merged them physically and mentally into one being, X-Man. They were forced to use it (as it only worked once before blowing up), to defend the world from Galactus. They won the battle, at the expense of all of their super powers, and inadvertently turning Thing into a mindless monster, much like the Hulk.
Trivia
- Sue states that Bloomingdale's gives a special discount to superheroes' wives.
- Uatu learns that there was another way to defeat Galactus instead of giving up the Ultimate Nullifier.
- The principal scenario, the Hulk being massive, green-skinned, and incredibly strong, while keeping Dr. Banner's memories, personality and intellect, was explored in the mainstream continuity, the MCU, and several other realities after this comic was first published. Banner under this state is usually called, officially or otherwise, "Professor Hulk."