Worm

Slithering out of the savage wilds of Marvel's Copper Age, Worm made their debut in the landmark pages of The Uncanny X-Men #250 in 1989, brought to life by the legendary creative team of Chris Claremont and Marc Silvestri. This is a character who keeps genuinely wild company — sharing adventures with the likes of Ka-Zar, Kevin Plunder, Barbarus, and Brainchild, a roster that places Worm squarely in the untamed, primal corners of the Marvel Universe. Affiliated with both the X-Men and S.H.I.E.L.D., Worm occupies a fascinatingly broad world for a figure with a modest catalog footprint, and the fact that their publishing history stretches all the way to 2026 speaks to a stubborn staying power that any completionist should respect. A rare find for fans who love digging into the stranger, wilder edges of X-Men lore.