The Avengers: Earth's Mightiest Heroes - Season 2 - Eps 15: Powerless
The Enchantress offers Loki a chance to exact his revenge on Thor and the Avengers for thwarting his conquest of the Nine Realms, and uses a spell to strip Thor, Captain America, and Iron Man of their powers. Now, the helpless heroes must defeat Loki - his soul now in command of a powerful Asgardian weapon known as the Destroyer - without their abilities.
About The Avengers: Earth's Mightiest Heroes

Title: The Avengers: Earth's Mightiest Heroes
First Air Date: 2010-10-20
Last Air Date: 2012-11-11
Status: Canceled
Rating: 8.161/10 (from 704 votes)
Language: EN
Seasons: 3
Total Episodes: 52
Network: Disney XD
Genres: Action & Adventure, Animation, Sci-Fi & Fantasy, Family
Production Companies: Marvel Entertainment, Marvel Animation
Synopsis
When the powers of a single hero are not enough to save the world, the world’s greatest heroes—Iron Man, Thor, Captain America, The Hulk, Ant-Man/Giant Man and Wasp—assemble to form the Avengers.
Cast

Eric Loomis
Iron Man (voice)

Brian Bloom
Captain America (voice)

Rick D. Wasserman
Thor (voice)

Colleen O'Shaughnessey
Wasp (voice)

Chris Cox
Hawkeye (voice)

Fred Tatasciore
Hulk (voice)

Wally Wingert
Hank Pym (voice)

Alex Désert
Nick Fury (voice)

Gabriel Mann
Bruce Banner (voice)

Jennifer Hale
Ms. Marvel (voice)