Captain America [Steve Rogers]; Black Widow [Natasha Romanoff]; Nick Fury; SHIELD; Spider-Man; X-23; Evil Iron Man [Tony Stark] (alternate dimension, grey armor); Paul Patterson; Sunfire (cameo); Iron Man [Tony Stark] (cameo); Doctor Strange; Wong; Mister Fantastic; Titannus
Synopsis
Captain America and Black Widow drop in to help Spider-Man and X-23 defeat the doppelganger Tony Stark. During the battle, the evil Tony hints at an event to come called the Titannus war.