Because the X-Men were introduced as an already-formed team, their individual origins came out later in a series of back-up stories showing how Xavier recruited them. Jack O'Diamonds was a criminal who tried recruiting the runaway Scott Summers as a partner-in-crime. Jack's madness soon became apparent, though, and the young Cyclops instead helped Charles Xavier fight against the Living Diamond. Jack seemingly died, but he reappeared in the Krakoan Era in a flashback story set shortly before Giant-Size X-Men #1, where... he died again. Okay. Cool.
https://uncannyxmen.net/characters/living-diamond
Welcome to unstablemolecules.com, the discussion home for mightyavengers.net and uncannyxmen.net!
Profile On...LIVING DIAMOND!
Profile On...LIVING DIAMOND!
"If you want to tell people the truth, make them laugh, otherwise they'll kill you." -- Oscar Wilde