Crash

Crash is one of the many playable Characters in Quake III Arena, that has a background related to the Doom games.

Biography
Once, she was Doom's military instructor. Now the Arena Eternal tests Crash's mettle to the extreme-extreme patience, that is. She is the trainer who introduces new warriors to the skills of battle.

Trivia

 * As she only appears in Quake III Arena (which is not considered canon in either the Doom or Quake series), Crash is not considered Canon in any Doom game. And is thus only canon in Quake III Arena.