When Marvel fans watch the new Fantastic Four movie they won't just be introduced to Reed Richards, Sue Storm , Johnny Storm and Ben Grimm, they'll also get to meet the fifth member of the family — Franklin Richards.

In a 1982 arc by John Byrne, Franklin gets frustrated trying to solve a Rubik’s Cube and uses his powers to age himself into an adult body, though he couldn’t actually gain more emotional maturity. He winds up going back to being a kid, placing restrictions on his own abilities to allow him to have something of a normal childhood.

First Steps. In a mid-credits scene he was seen allowing Sue and Richard's son Franklin Richards touching his face. But what is the larger impact of this scene leading up to Avengers Doomsday?