The elderly martial arts master is a stock character in martial arts films. Typically East Asian, he is a near-invincible master of the martial arts, despite his age and presumed decrease in physical strength. Most often he teaches either generic Kung Fu, or an exotic style specific to the movie (see List of fictional martial arts). During the films they are in, the master often becomes close with his student, with the master becoming a father figure to his pupil, who is, in turn, looked upon as a son. Usually, when the master dies or is captured, the hero will take it upon himself to avenge or rescue his master.