X Factor issue 23 Marvel Comics
First Cameo appearance of Archangel (Warren Worthington)
Story Title: "You Say You Want Some Evolution?"
X-Factor arrive where the kids are being held and manage to sneak inside, but they fall into a trap: the leader of the Right finally reveals itself to the mutants, who manage to create a confusion and let loose the children. The ensuing battle leads to a climax while Apocalypse, ever vigilant, commands all of his Four Horsemen against each other to determine which one will lead them against X-Factor.