X-Factor

Well before the original members of the X-Men formed the group X-Factor, an arcade game titled X-Factor appeared in Marvel Two-In-One #94. Power Man, Iron Fist, and Thing took turns playing the challenging arcade game, which involved outmaneuvering obstacles while navigating through a maze—and had no connection to mutant affairs.

One of the other games seen at the arcade was titled The Invaders, with no apparent ties to the World War II super team by that name.

Marvel Two-In-One. Vol. 1. No. 94. December 1982 "The Power Trap!" David Anthony Kraft (scripter), Ron Wilson (penciler), Ricardo Villamonte (inker), Joe Rosen (letterer), George Roussos (colorist), Jim Saliscrup (editor), Jim Shooter (editor-in-chief).

Published the same month as New Defenders #152 (Feb. 1986), X-Factor #1 reunited Angel, Beast, and Iceman with the rest of the original X-Men. A problematic premise of the new series was that Marvel Girl (Jean Grey) was a different character from Phoenix and therefore did not die in X-Men #137.