Equinox

Theresa Starr's father was transformed into Equinox — the Thermodynamic Man — after a laboratory accident left his body perpetually torn between searing heat and freezing cold, granting him devastating thermodynamic powers but condemning him to constant physical torment.

Bursting onto the scene in the landmark Giant-Size Spider-Man #1 back in 1974, Equinox is a Bronze Age Marvel creation from the celebrated team of Len Wein and Ross Andru — the same era that gave the House of Ideas some of its most enduring and visually striking characters. Sharing pages with the likes of Spider-Man and the Human Torch across their adventures, Equinox occupies a fascinating corner of the Marvel Universe that rewards curious collectors willing to dig a little deeper. Though their catalog footprint is compact, the character has persisted in the Marvel tapestry for over five decades, turning up in reference cornerstones like the All-New Official Handbook of the Marvel Universe A to Z — a sure sign that the true believers at Marvel have never forgotten them. For fans who love hunting down Bronze Age gems with genuine staying power, Equinox is exactly the kind of discovery that makes flipping through back issues so rewarding.