|The Avengers: Earth's Mightiest Heroes|
|Director:|| Sebastian Montes|
|Release Date:||October 20, 2010|
|Running Time:||40 mins|
The Avengers: Earth's Mightiest Heroes - Gamma World is a TV Movie in the Avengers: Earth's Mightiest Heroes series that serves as the season 1.
Leader has placed a dome around the Cube. It soon expands with anyone who is caught in it turned into a Gamma Monster. Meanwhile, Hawkeye catches up with Black Widow.
With the Avengers turned into Gamma Monsters, Hawkeye must convince Hulk to help fight Leader.
- Brian Bloom as Steve Rogers/Captain America
- Colleen O'Shaughnessey as Jan van Dyne/Wasp and Ann Darnell/Vapor
- Eric Loomis as Tony Stark/Iron Man
- Chris Cox as Clint Barton/Hawkeye
- Troy Baker as Clay Quartermain
- Cam Clarke as Leonard Samson/Doc Samson and Simon Utrecht/Vector
- Rick D. Wasserman as Thor Odinson and Carl Creel/Absorbing Man
- Vanessa Marshall as Natasha Romanoff/Black Widow and Ophelia Sarkissian/Viper
- Jeffrey Combs as Samuel Sterns/Leader
- James Mathis III as T'Challa/Black Panther and Henry Camp/Bulldozer
- JB Blanc as Dirk Garthwaite/Wrecker
- Nolan North as Brian Calusky/Piledriver
- Robin Atkin Downes as Emil Blonsky/Abomination and Heinrich Zemo/Baron Zemo
- Fred Tatasciore as Hulk and Hulkbuster Pilot
- Gabriel Mann as Bruce Banner