Avalanche's past before Mystique recruited him for the Brotherhood is almost entirely unknown, except for the fact that he is an immigrant from Greece. He first publicly appeared with the Brotherhood when they unsuccessfully attempted to assassinate Senator Robert Kelly during his hearings on the menace that mutants allegedly pose to humanity in general. He has the ability to generate powerful waves of vibrations from his hands, creating highly destructive effects. The vibrations can cause an inorganic object to shatter or crumble into dust. When directed against large objects like buildings or upon the earth itself, the vibrations can produce effects similar to those of an earthquake or avalanches within limited areas. Avalanche need not touch an object to affect it: he can direct the vibrations against it from some distance away from it. Avalanche is himself invulnerable to the effects of generating these intense vibratory waves. However, if the vibrations were to be reflected back upon him, he would be injured.
