Kwai Chang Caine was the featured character in which TV series?

Kwai Chang Caine is the featured character in the TV series "Kung Fu". The show aired on ABC from October 1972 to April 1975 for a total of 63 episodes. Kung Fu was preceded by a full-length (90 minutes, with commercial breaks) feature television pilot.

"Kung Fu" follows the adventures of a Shaolin monk, Kwai Chang Caine (played by David Carradine as an adult, Keith Carradine as a teenager, and Radames Pera as a young boy) who travels through the American Old West armed only with his spiritual training and his skill in martial arts, as he seeks his half-brother, Danny Caine. Kwai Chang Caine is the orphaned son of an American man, Thomas Henry Caine, and a Chinese woman in mid-19th century China. After his maternal grandfather’s death he is accepted for training at a Shaolin Monastery, where he grows up to become a Shaolin priest and martial arts expert. Flashbacks are often used to recall specific lessons from Caine’s childhood training in the monastery from his teachers, the blind Master Po and Master Kan.

In the pilot episode Caine's beloved mentor and elder, Master Po, is murdered by the Emperor's nephew; outraged, Caine retaliates by killing the nephew. With a price on his head, Caine flees China to the western United States.

Although it is his intention to avoid notice, Caine's training and sense of social responsibility force him out into the open, to fight for justice or protect the underdog. He then moves on to avoid capture.