Board Thread:Supergirl discussions/@comment-9346948-20170523001131/@comment-31125534-20170524082356

Probably a pun on the fact that they're super-powerful teenagers and their members include a telepathic girl, someone who controls magnetism, a guy that shoots lightning bolts, Phantom Girl is intangible, Ferro Lad turns into metal... ironically those characters are older than Marvel Girl, Magneto, Storm, Shadowcat, Colossus...

Dave Cockrum also was one of the main Legion and X-Men's artists in the 70's.