The other characters can be summoned for assist attacks and there is also a duo team attack to control two characters for a brief time, along with the ability to perform super moves where the characters team up. Street Fighter you now have to make up a squad of three characters instead of two. The game follows the standard fighting gameplay, but different from X-Men vs. The game takes place in a Marvel universe where Professor Charles Xavier asks the heroes to help him before he merges with the consciousness of Magneto to form the being known as Onslaught, the final boss. Capcom: Clash of Super Heroes is a 2D fighting game that combines characters from Capcom's videogames with characters from the Marvel comic universe, similar to Marvel Super Heroes Vs.