Activision has announced the release of Marvel: Ultimate Alliance Heroes and Villains. The expansion packs feature eight new playable characters: The Incredible Hulk, Magneto, Hawkeye, Sabretooth, Doctor Doom, Cyclops, Nightcrawler and Venom, each complete with new signature powers, skins, dialog, conversations and achievement points. The download will be available in April via the Xbox Live Marketplace online gaming service.

There have been no details released of the expansion being made available on Playstation 3.