Gazillion has unveiled a new Team-Ups feature for Marvel Heroes. You can now recruit a few of your favorite heroes to battle by your side, according to the game's latest website update. Current Team-Up possibilities include Spider-man, Falcon, Firestar, and Magik. More heroes will be added "in the weeks, months, and years ahead," Gazillion says.
Team-Up heroes have "their own unique set of skills and abilities," as well as a few other specifics that you can learn about by reading the FAQ.