Activision today announced plans to release Marvel: Ultimate Alliance Heroes and Villains, an expansion pack for Marvel: Ultimate Alliance featuring 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. Marvel: Ultimate Alliance Heroes and Villains will be available in April via the Xbox Live Marketplace. The downloadable content will be released in three packs. The Hero Pack and Villain Pack will each be 500 Microsoft points ($6.25) and the Combined Hero and Villain Pack will be 800 Microsoft points ($10). Heroes and Villains gamer pic packs will also be available for 80 Microsoft points each ($1).