Cessily Kincaid

Cessily Kincaid is a mutant who debuted in the Xavier Institute era, where she discovered her body had transformed into living liquid mercury. She enrolled at the Xavier Institute and became known as Mercury, navigating life with her radically altered, reflective form.

Cessily Kincaid made her entrance into the Marvel Universe in 2004's New Mutants #10, brought to life by the creative team of Nunzio DeFilippis, Christina Weir, and Carlo Barberi during a rich chapter of Modern Age X-Men storytelling. Over more than two decades she's carved out a meaningful presence across titles like New X-Men, X-Men: Pixie Strikes Back, and Astonishing X-Men, keeping vivid company with the likes of Rockslide, Victor Borkowski, and Wolverine himself. With three key-issue appearances to her name and a publishing history stretching all the way to 2026, she's proven herself far more than a debut curiosity — she's a genuinely enduring figure in the younger generation of Marvel mutantkind. For collectors and readers who love the texture of that post-Morrison X-Men era and the characters who grew out of it, Cessily is absolutely worth tracking down.