Whirlwind

Whistler

White Queen (Adrienne Frost)

White Tiger (Angela Del Toro)

White Tiger (USM)

Whizzer (Stanley Stewart)

Wiccan

Wild Child

Wild Child (Age of Apocalypse)

Wild Pack

Wildside

William Stryker

Wilson Fisk

Wind Dancer

Winter Soldier

Wither

Wolf Cub

Wolfpack

Wolfsbane

Wolfsbane (Age of Apocalypse)

Wolver-dok

Wolverine

Wolverine (LEGO Marvel Super Heroes)

Wolverine (Marvel War of Heroes)

Wolverine (Ultimate)

Wolverine (X-Men: Battle of the Atom)

Wonder Man

Wong

Wong (Ultimate)

Wraith

Wrecker

Wrecking Crew

X-23

X-51

X-Babies

X-Cutioner

X-Factor

X-Factor Investigations

X-Force

X-Man

X-Men

X-Men (Ultimate)

X-Ray (James Darnell)

X-Statix

X.S.E.

Xavin

Xorn (Kuan-Yin Xorn)

Yellow Claw

Yellowjacket (Hank Pym)

Yellowjacket (Rita DeMara)

Yondu

Young Avengers

Young X-Men

Zaladane

Zaran

Zarda

Zarek

Zeigeist

Zemo

Zeus

Zodiak

Zombie (Simon Garth)

Zuras

Zzzax