He is the genetic creation son of Mr. Sinister, who he looks almost exactly like. In his first appearance, he tried to help restore the life of Grigory Rasputin. If he had accomplished his goal, Grigory would have supplied him with the money and resources he needed to bring back his "father", Mr. Sinister, in his real body, so he would be his real self. His plan was thwarted when the X-Men were able to stop Grigory from coming back.
Powers and Abilities
Powers
Known Powers:
Cellular Shapeshifting: ability to control every molecule of his body, allowing him to assume the form of any one he wishes. He once reduced himself into a semi-liquid state.
Regenerative Healing Factor: Mister Insidious is able to rapidly regenerate damaged or destroyed tissue with much greater speed and efficiency than an ordinary human. Insidious can fully heal from injuries that result in massive tissue damage or loss such as multiple gunshot wounds, slashes, puncture wounds, broken bones, and severe burns within a matter of moments.
Superhuman Stamina: Mister Insidious's muscles produce considerably less fatigue toxins than the muscles of ordinary humans. He can exert himself at peak capacity for about 24 hours before fatigue begins to affect him.
Superhuman Strength: possesses superhuman strength, which may be a product of his shapeshifting. Insidious is able to lift/press about 10 tons.
Superhuman Reflexes: Mister Insidious's reflexes are enhanced to levels that are beyond the human body's natural limits.
Telepathy: He can read minds and project his own thoughts into the minds of others within a radius of 250 miles (on Earth). With extreme effort he can greatly extend that radius.
Mental Paralysis: ability to induce temporary mental or physical paralysis
Mind Control: capable of controlling the minds of others but only one at a time and if the target is in his physical presence.
Dilate Power: ability to mentally paralyze a foe he's touching and the ability to psionically "turn off" the superpowers of any mutant.
Telekinesis: possesses telekinetic abilities enabling him to levitate and manipulate living beings, inanimate objects, and to some extent energy, psionically. He can “lift” as much as 10 tons of weight and possibly even more and can enable himself to “fly” at great speed.
Concussive Blasts: can fire blasts of concussive force from his hands or from the diamond-shaped scarlet mark on his forehead.
Abilities
Genius-Level Geneticist: Insidious is a genius and a geneticist of the highest order, able to predict genetic mutations and splice DNA.
Master Surgeon: He is a master surgeon, being able to perform a large variety of surgeries.
Skilled Mechanical Engineer: Having created devices that seem to have been taken from the tales of Jules Verne.
Master Manipulator: He possesses a good deal of knowledge in psychology, and is a skilled manipulator.
