>>108772743An convoluted event called "The Crossing happened where it was revealed Tony had been evil and working for Kang for several years. To keep his secret he killed two Avengers and some other stuff that ultimately doesn't matter.
So with this being both a late nineties comic and a Kang The Conqueror story, the Avengers bring back a Teen Tony from the past to stop him (he doesn't, he just gets his heart ripped out and spends the rest of the story K.O.'d)
So after all that there was period where Teen Tony was the now MC (Barely 10 issues) Onslaught happened and he went a parallel world where he was an adult again. After which was brought back by Franklin Richards and fused with his Teen self.