The Avengers: Earth's Mightiest Heroes (Season 3)

The Avengers return in a magical season where they meet new faces such as Dr. Strange, Scarlet Witch and new foes such as Dormammu and others.

Characters:

 * Avengers:
 * Steve Rogers/Captain America (Brian Bloom)
 * Tony Stark/Iron Man (Eric Loomis)
 * Thor (Rick D. Wasserman) - realizes the Prophecy of Ragnarok has begun, and must find a way to stop it
 * Bruce Banner/Hulk (Gabriel Mann/Fred Tatasciore)
 * Hank Pym/Yellowjacket (Wally Wingert)
 * Janet Van Dyne/Wasp (Colleen O'Shaughnessey)
 * T'Challa/Black Panther (James C. Mathis III)
 * Clint Barton/Hawkeye (Chris Cox) - leaves the Avengers to join the Defenders
 * Carol Danvers/Ms. Marvel (Jennifer Hale)
 * Vision (Peter Jessop)
 * Peter Parker/Spider-Man (Josh Keaton, replaces Drake Bell) - a reservist member on his way to become a full-time Avenger
 * Pietro Maximoff/Quicksilver (Mark Hildrerh)
 * Wanda Maximoff/Scarlet Witch (Kate Higgins) - joins the Avengers, and becomes attracted to Vision, resulting in a love triangle between them and Nightcrawler

Supporting Characters:

 * S.H.I.E.L.D.:
 * Nick Fury (Alex Dessert)
 * Maria Hill (Kari Wuhrer)
 * Natasha Romanoff/Black Widow (Vanessa Marshall)
 * Daisy Johnson/Quake (Lacey Chalbert)
 * Defenders:
 * Dr. Stephen Strange (Xander Berkley) - a new ally to the Avengers who is building a new team called, the Defenders to prepare for the threat of Dormammu
 * Brian Braddock/Captain Britain (Jason Issacs) - joins the Team when Britain was saved by the Avengers.
 * Bobbi Morse/Mockingbird (Elizabeth Daily) - the reason she couldn't be around for the battle of Galactus, was because people wouldn't trust her after the Skrull Invasion where Veranke posed as her
 * Clint Barton/Hawkeye (Chris Cox) - quits the Avengers after aiding Mockingbird when everyone lost faith, and joins Dr. Strange in the Defenders, and is surprised to see Mockingbird on the team
 * Namor (James Patrick Stewart) - joins the Team when Atlantis was almost destroyed by Atuma.
 * Johnny Blaze/Ghost Rider (Keith Ferguson)
 * X-Men: the ones from Wolverine and the X-Men
 * James Howlett Logan/Wolverine (Steve Blum)
 * Scott Summers/Cyclops (Nolan North)
 * Rogue (Kieran van den Blink)
 * Jean Grey (Jennifer Hale)
 * Kurt Wagner/Nightcrawler (Liam O'Brien)
 * Ororo Munroe/Storm (Susan Dalian)
 * Bobby Drake/Iceman (Yuri Lowenthal)
 * Kitty Pryde/Shadowcat (Danielle Judovits) - becomes fast friends with Wasp
 * Hank McCoy/Beast (Fred Tatasciore)
 * Forge (Roger Craig Smith)

Antagonists:

 * Dormammu (Darin DePaul) - the main antagonist of the season, the threat both the Avengers and Defenders have to stop, his goal is to recreate the world into his image.
 * Baron Mordo (Greg Berger) - one of the arc villains, servant to Dormammu
 * Surtur (Rick D. Wasserman) - returns as one of the arc villains, he reveals to Thor that Odin is not on Asgard, and that his absence has left Asgard defenseless
 * Kurse/Odin (Clancy Brown) - revealed to not be Odin, whose was left on Earth, drained from his power to keep Him at bay from returning
 * Erik Lehnsherr/Magneto (Tom Kane) - one of the arc villains, the same character from Wolverine and the X-Men
 * Chthon (Liem O'Brien) - one of the arc villains, possesses Scarlet Witch
 * Mephisto (udo Kier) - one of the arc villains