Tigra and Spider-Woman take a newly emerged mutant teen under their wings, but first they fight over him. Sadly, the kid never really goes anywhere.
His code name is Poltergeist, he has the power to make his own hallucinations real, and I think the only other place he appears is in the Beauty and Beast miniseries, which I’ll cover in a few years when it comes forward, and then briefly in a Civil War tie in book.