Mystique

Mystique is a shape-shifting supervillain and adversary to the X-Men, known for her azure blue skin, yellow eyes, and reptilian tongue. She possesses a cunning and fiercely independent personality, often driven by the desire to create a society for mutant kind free from human interference. She has a complex relationship with other mutants, especially Magneto and Rogue, whom she has both antagonized and teamed up with in the past. Her primary power lies in her mastery over her shape-shifting abilities, allowing her to mimic any person's form, and she's a formidable hand-to-hand combatant.