Morph (X-Men: The Animated Series)

Morph, a non-binary Mutant, who possessed the remarkable ability to alter their appearance, seamlessly transitioning into various forms, whether human or animal. Joining the X-Men, they developed a close bond with Wolverine. During a mission at the Mutant Control Agency headquarters, Morph valiantly intervened but was seemingly fatally wounded, and left behind as the team retreated.