Helix

A creature of the late-Marvel Modern Age, Helix burst onto the scene in 1999's Fantastic Four #17, conjured by the legendary team of Chris Claremont and Salvador Larroca. With only a handful of catalog appearances spread across Fantastic Four, X-Men, and X-Men Universe, this is a rare, blink-and-you'll-miss-it figure — the kind of deep-cut discovery that makes longtime collectors feel like archaeologists. Helix shares those pages with the likes of Kurt Wagner, Colossus, and the intriguingly named Gyre, Coil, and Ringlet, placing this character squarely in a corner of the Marvel Universe where the worlds of the FF and the X-Men dramatically collide. Three appearances make Helix a genuine rarity worth hunting down for anyone who loves the experimental energy of turn-of-the-millennium Marvel storytelling.