Hydron

Splashing onto the scene in the Bronze Age pages of Ms. Marvel #11 (1977), courtesy of the legendary team of Chris Claremont, Sal Buscema, and Frank Giacoia, Hydron is one of Marvel's more elusive figures — a character whose debut put them in striking company alongside the likes of Carol Danvers herself, as well as Magnum, Hellfire, and Hecate. With appearances stretching across four decades into Thor: Gods & Deviants, Hydron has proven quietly durable in the Marvel cosmos. Rare on the page but intriguing in context, this is exactly the kind of deep-catalog discovery that makes Bronze Age hunting so rewarding.