Piotr Rasputin

Organic steel form: Rasputin is a mutant with the superhuman ability to convert the tissue of his entire body into an organic steel-like substance. This substance resembling steel is of unknown composition but appears to be analogous to osmium and to carbon steel. He is able to transform into this armor-like state at will (the process is virtually instantaneous) and remain in that form for an as yet undetermined amount of time. Once in this armored form, he remains so until he consciously wills himself back to normal. If he is rendered unconscious, however, he spontaneously reverts to his normal form. The longest time he has remained in armored form by choice so far has been five days.

In the armored state, Rasputin possesses the same degree of mobility that he does in his normal form. The conversion from flesh and bone to organic steel is accomplished by a psionic whole-brain interface with an ionic form of osmium, an extremely dense metal, located in another dimension. In willing the act of transformation, Rasputin actually exchanges osmium atoms for his carbon atoms. The psionic interface with the other dimension re-creates all of Rasputin's body in functionally similar organic ionic-osmium materials. The process by which Rasputin gains additional mass from an unknown, perhaps extra-dimensional, force remains unknown. Rasputin cannot become partially or selectively armored; his body is either entirely converted or not.
 * Superhuman strength: After transforming into his armored state, Rasputin possesses vast superhuman strength. As a teenager, he was sufficiently strong enough to be listed as class 70. However, as a fully mature adult, his strength increased to the point that he is listed as class 100.
 * Superhuman stamina: Also, while in his armored form, Rasputin's musculature produces considerably less fatigue toxins than the musculature of a normal human. At his peak, he can physically exert himself at peak capacity for several days before the build-up of fatigue toxins in his blood begins to impair him.
 * Superhuman durability: In his armored form, Rasputin is invulnerable to most forms of bodily harm. His armor is capable of withstanding ballistic penetration, including that of a 155 millimeter Howitzer shell. He can survive extremes of temperature from 70 degrees above absolute zero to approximately 9,000 degrees Fahrenheit. He can survive a collision with a loaded, ten-ton flatbed truck at 100 miles per hour or an explosion of 4,500 pounds of TNT. He can also survive falls from great heights while in his armored body.