Killer Frost

Crystal Frost was a scientist who harbored unrequited feelings for her colleague Martin Stein. After becoming accidentally trapped in a thermafrost chamber during an Arctic research expedition, she emerged transformed into Killer Frost — a cold-powered villain who absorbs heat from living victims.

Few characters carry a name as evocatively chilling as Killer Frost, who made her catalog debut in the landmark Crisis on Infinite Earths #1 (1985) — itself one of the most consequential single issues in DC history, crafted by the legendary team of Marv Wolfman, Len Wein, and George Pérez. That Bronze Age baptism by fire (or ice) placed her immediately in rarefied company, sharing pages with titans like Superman, Batman, Supergirl, and Firestorm across a publishing presence stretching all the way to 2021. Her appearances across Crisis on Infinite Earths, Firestorm, and DC Comics: Bombshells paint a portrait of a villain — and sometimes something more complicated — who has proven genuinely durable in the DC universe over nearly four decades.