Avengers Assemble: Season 1, Episode 4
1 - 4: The Serpent of Doom
Thor believes he must sacrifice himself to save the world from Doctor Doom, who summons the Midgard Serpent using a powerful Asgardian weapon.
Thor believes he must sacrifice himself to save the world from Doctor Doom, who summons the Midgard Serpent using a powerful Asgardian weapon.