Walkthrough: While still holding the Time Stone, Iron Man has a flashback after the Symbiote Attack on Avenger Tower. Here, he sees the events that first unfolded to bring them in their current predicament. He sees Jedah crossing over universes to find Death, who he talks into agreeing to a deal that will see them going after the Infinity Stones in order to create a balance of life and most death for the living.
In order to get the Infinity Stones, Death manipulated Thanos to do her bidding. He is quite fond on the ominous mistress, and he agrees to do as she wishes. She tells Thanos that they need the Reality Stone, which just so happened to be held in the Capcom Universe. She also tells him that they need the help of Ultron, as he is one that can cross the barrier between the two universes.
Thanos tells Ultron about the city in this other universe, attempting to trade the Stone for the wonders of that city. Ultron agrees to go, but when he arrives to retrieve the stone, he meets Sigma. The two immediately hit it off, sharing the same thoughts of flesh extinction. The two end up forming an alliance of their own, agreeing to unite and destroy all organic matter and turn on Thanos. A brief fights takes place, but Thanos is no match for both of them. They then toss Thanos in the jail he was first in back at the start of Story Mode, and then Ultron Sigma begins converging the two universes.
Playable Characters