Kitty Pryde

A teenage mutant from Deerfield, Illinois, Katherine Anne 'Kitty' Pryde was recruited by both the X-Men and the Hellfire Club after her phasing power spontaneously emerged. She chose the X-Men, becoming one of their youngest—and most enduring—members.

Few characters have burrowed so deeply into Marvel's DNA as Kitty Pryde, who made her debut in X-Men Annual #4 in 1980, conjured into existence by the legendary Bronze Age team of Chris Claremont and John Romita Jr. Over nearly five decades — and more than a thousand catalog appearances — she has grown from a fresh-faced newcomer sharing adventures with icons like Wolverine, Storm, and Nightcrawler into one of the X-Men's most enduring and beloved figures. Her home turf spans The Uncanny X-Men, X-Men, and even Ultimate Spider-Man, and with 59 key-issue appearances to her name, collectors have consistently recognized that where Kitty shows up, something worth owning is happening. If you're building a serious X-Men library, she's not optional — she's essential.