The Avengers: Earth’s Mightiest Heroes (2010)
TV SeriesOptional
The classic Avengers line-up forms and faces Loki, Kang and Ultron in a serialized story. Released in 2010, it’s a Marvel series that isn’t part of the MCU timeline, so it’s optional and stands on its own. All 52 episodes stream on Disney+ in the US, about 19h 4m in all.
| Release date | October 20, 2010 |
|---|---|
| Episodes | 52 × ~22 min |
Why it’s worth knowing about
Widely considered the best Avengers cartoon and close to the comics.
About The Avengers: Earth’s Mightiest Heroes
Earth's Mightiest Heroes begins with a massive breakout from four supervillain prisons at once. Iron Man, Thor, Hulk, Ant-Man and Wasp end up fighting side by side and form the Avengers, soon joined by Captain America, Hawkeye and Black Panther. Unlike most Marvel cartoons, the story builds across episodes and draws on decades of comics. Season 2 adds Ms. Marvel and Vision and brings in Doctor Doom, the Red Skull, the Kree, a Skrull invasion and Galactus.
Marvel Animation and Film Roman made the show for Disney XD, where it premiered on October 20, 2010, and ran two seasons of 26 episodes each, ending in November 2012. Christopher Yost was the head writer and a developer alongside Ciro Nieli and Joshua Fine. The voice cast includes Eric Loomis as Iron Man, Brian Bloom as Captain America, Fred Tatasciore as Hulk, Rick D. Wasserman as Thor, Colleen O'Shaughnessey as Wasp and Wally Wingert as Hank Pym. Critics liked it, and it often ranks as the best Avengers cartoon.
Good to know
- Fans still love its theme song, "Fight As One" by Bad City.
- The show premiered with a 20-part micro-series of short origin stories for each hero.
- Season 2 adapts the Secret Invasion comic, with Skrulls impersonating heroes.
- It wasn't renewed for a third season and was replaced by Avengers Assemble in 2013; Christopher Yost later shared ideas for what a third season might have been.
- The show was originally conceived as a Hulk series.
Spoiler Spoilers for The Avengers: Earth’s Mightiest Heroes: tap to reveal
- Loki is the one who orchestrated the mass breakout, and he has the Enchantress form the Masters of Evil to keep the Avengers busy.
How to watch it
This is its own continuity, so watch it whenever you like, though it's especially fun after the Phase One MCU films. Start with the micro-episodes or the opening "Breakout" two-parter. The Kang episodes in season 1 and the Skrull invasion in season 2 are the arcs to watch. Comics fans will appreciate how faithfully it handles classic Avengers stories. Expect the second half of season 2 to feel rushed because of behind-the-scenes changes.
Where to watch The Avengers: Earth’s Mightiest Heroes in the US
| Streaming (subscription) | Disney+ |
|---|---|
| Rent or buy | Amazon, Apple TV, Fandango at Home |
Where to watch The Avengers: Earth’s Mightiest Heroes outside the US
| Country | Stream | Other options |
|---|---|---|
| United Kingdom | Disney+ | None needed |
| India | JioHotstar | None needed |
Streaming availability last verified: October 16, 2026
All streaming options for Marvel movies and shows, by service and country.
Related guides
The Avengers: Earth’s Mightiest Heroes FAQ
Why was Earth's Mightiest Heroes canceled?
Disney XD didn't renew it for a third season and replaced it with Avengers Assemble in 2013. That show was designed to feel closer to the 2012 Avengers film.
How many seasons of Earth's Mightiest Heroes are there?
Two, each with 26 episodes, plus a set of short micro-episodes released before the premiere.
Who voices Iron Man in Earth's Mightiest Heroes?
Eric Loomis voices Iron Man. Brian Bloom voices Captain America, and Fred Tatasciore voices Hulk.
Can you skip The Avengers: Earth’s Mightiest Heroes?
Yes. It sits outside the MCU timeline, so nothing in the MCU depends on it.
How many episodes does The Avengers: Earth’s Mightiest Heroes have?
The Avengers: Earth’s Mightiest Heroes has 52 episodes, around 22 minutes each.
Is The Avengers: Earth’s Mightiest Heroes part of the MCU?
No. It was made outside the Marvel Cinematic Universe and isn’t on its timeline.