Metamorph: can psionically alter the formation of her biological cells at will. As a result she can cause herself to look and sound like an exact duplicate of any human, humanoid, or semi-humanoid being of either sex, wearing virtually any kind of clothing. Her control is so exact that she can precisely duplicate another persons retina pattern in her own eyes, finger, palm and skin-pore patterns on her own hands and skin, and vocal cords to match voices to the point of corresponding voiceprints. While she can make herself look exactly like a person who is physically bigger than herself, she will not weigh as much as the real person does. Although she can maintain the form of a person of her height, weight, and build indefinitely, the longer that she maintains the form of a person physically bigger than herself, the greater the strain she feels.
Mystique was once exposed to dangerous levels of radiation in order to save the life of Toad. The process morphed Mystique's appearance to match her more reptilian physique from the movies, and boosted her powers so that she could now morph her body into taking certain desired physical traits depending on her situation at the time (note: this reptilian form was quickly discarded, whether it was because of retcon or if she simply shape-shifted back to her previous form remains to be seen).
Examples of this new ability include: night vision, wings on her back, talons in her fingers, sharp fanged teeth, natural body armor, and can even compress nearly two-dimensional like a rolling pin to glide on air currents, similar to Mr. Fantastic, which she uses to survive an explosion.
Metamorphic Adaptation: After her enhancement Mystique has shown the ability to adapt her body depending on her situation at the time. She was able to adapt her body in order to camouflage according to her surroundings, shift her organs into her lower extremities, heal from numerous bullet wounds in at least a few minutes, and mimic the textures of metals (when she took on the form of Magneto and his helmet). She also clearly stated that she is always naked and she merely makes her skin look and feel like other materials to fool others.
Enhance Physical Attributes: ability to enhance her strength, speed, agility, reflexes, and senses.
Accelerated Healing: Mystique's nature allows her to repair and regenerate herself from minor to near death injuries in a short span of time, much faster than an ordinary human.
Toxin & Disease Resistance: She is also able to develop resistance and immunities to toxins and diseases.
Retarded Aging: her metamorphic powers have retarded the degenerative effects of her aging process. She has always had this ability even before her enhancement; she is either close to or over one hundred years old.
Psychic Defense: Mystique's nature also provides her with a natural defense against telepathic intrusion.
Expert Combatant: Mystique is a highly skilled combatant.
Polyglot: Mystique has stated that she knows at least eleven languages; besides her presumably native German and English, she has demonstrated fluency in Spanish, Portuguese, French, and Czech.
Covert Operative: Strategist in terrorist and commando operations.
Mystique possesses the normal human strength of a woman of her physical age, height, and build who engages in intensive regular exercise. She can enhance her strength using her powers, yet this was never explained.
Appearance Limitation: Originally, it was clearly stated that Mystique's powers were limited to appearances only; as she could not assume the powers of the people she morphed into or alter her body to adapt to different situations. Although Mystique’s powers were enhanced, Mystique could never duplicate the powers of other superhumans. She still cannot duplicate the powers of the person she imitates: for example, when she turned herself into a duplicate of Nightcrawler, she did not gain the ability to teleport. However, she can use her powers to mimic the powers of others; such as assuming the form of Sabretooth, and then using her powers to enhance her senses, strength, speed, agility, and of course naturally heal at an accelerated rate.
She has used experimental weaponry and devices, including a power-drainer that disabled Iron Man.
Formerly Freedom Force Helicopter.
Conventional firearms and an energy beam pistol. Various skull-shaped explosives usually carried on her belt.