Doctor Sax

A Marvel villain who slipped out of the Bronze Age in 1983 — courtesy of creator Frank Springer in the pages of Dazzler — Doctor Sax is one of those deliciously obscure figures who rewards the deep-diving collector. With appearances stretching across four decades and company that includes heavy hitters like the Absorbing Man and Techmaster, this character clearly left enough of an impression to keep resurfacing in the Marvel universe. Four catalog appearances may sound modest, but turning up in Avengers: The Initiative alongside a Dazzler Omnibus collection means Doctor Sax has quietly outlasted plenty of flashier contemporaries — and that kind of staying power is worth a second look.