An Aleut native who works as a mercenary. His preferred weapons are glass knives — undetectable by security systems and reputed to be molecule-thin at the edges — and glass-tipped throwing spears. He travels on a motorcycle whose sidecar has been replaced with a hydrogen bomb that will automatically detonate if his brain ceases to emit electrical impulses. Raven has the phrase "POOR IMPULSE CONTROL" tattooed on his forehead, a sign of being arrested for some violent crime at least once in his life. His stated goal in life is to "nuke America" in retaliation for the historical treatment by America of native Aleutians, such as using their lands for nuclear testing (e.g., at Amchitka). His combination of fighting ability, conscienceless killing, and personal nuclear umbrella prompt Stephenson to refer to Raven in his introduction as "the baddest motherfucker in the world".
From http://en.wikipedia.org/wiki/Snow_Crash#Important_characters