"But they're just pale reflections of the true Hulk."
―Thor describing the Gamma Monsters[src]

Gamma Monster is a hideous creature of any type mutated by the Leader's Gamma Generator to anyone who got caught in the Gamma Dome.

Only those who are wearing special gamma-immune suits, taken an antidote or being invulnerable to radiation will be immune to the Gamma Dome inside. After Hulk destroyed the Gamma Dome transmitter, everyone who were infected turned back to normal.


  • Avengers (except Thor)
    Gamma Iron Man, Captain America and Black Panther.

    Iron Man, Captain America, and Black Panther infected and mutated by Gamma Radiation.

  • S.H.I.E.L.D. agents
  • Civilians in Las Vegas
  • Wrecking Crew


  • The Gamma Monsters resemble a combination of Hulked-Out Heroes, monsters and Marvel Zombies from the Marvel comics.
    The.Avengers.Earths.Mightiest.Heroes.2010.S01E12-E13.Gamma.World.HDTV.DivX-CP.avi snapshot 15.45 -2010.12.16 14.56.28-

    Wasp infected and mutated by Gamma Radiation.

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