Fantastic Four Vol. 1 # 203 - And a Child Shall Slay Them!

Nightmarish doubles of the Fantastic Four appear, and it is up to their real-life counterparts to stop them! The creatures have been created by a boy named Willie Evans Jr., whose father had been exposed to the same cosmic rays that the FF did, and have subsequently given his child the awesome abilities!

Willie Jr. was considered being included by John Byrne in a new teen X-group with Kitty Pryde, which of course eventually became the New Mutants. In an early stat sheet of Kitty, Byrne writes:

"The concept here is that Ariel should be not so much a new member of the X-Men per se, but rather the first member of a SECOND team, a kind of 'X-Men in Training' team, which could possibly also include that black kid from FF #203. They'd all (However many there are-say 5?) wear this modernized version of the original x-costume, and each would occasionally go on missions with the first team"