- Fake Mixed Race: Caine is half Chinese. David Carradine was not.
- Fake Nationality: In addition to David Carradine (although in fairness, Caine was half-white), the two-part episode "Besieged" featured his partner at the time Barbara Hershey (then billed as Barbara Seagull) as a Chinese girl called Nan Ching.
- Irony as She Is Cast: David Carradine had no formal martial arts training of any sort. He had received some training as a dancer when he was younger.
- Real-Life Relative: In several episodes, a younger Kwai Chang Caine was played by Keith Carradine, David Carradine's younger brother. Their other brother Robert Carradine and their father John Carradine also appeared in episodes (as Sonny Jim and Serenity Johnson, respectively).
- Recycled Set: The set for the Shaolin Temple was originally a set used for Camelot that was inexpensively and effectively converted for the Chinese setting.
- What Could Have Been: Bruce Lee was supposed to star as Caine, but the networks were unsure about casting an Asian actor in the lead, believing that that an American TV audience wasn't quite ready for an Asian actor in the lead role. According to an interview with Lee's widow, Linda Lee Cadwell, Bruce Lee had originated the concept.
- According to the producers, even though Lee was consulted and considered for the lead, they believed that they created the concept and that Carradine was always their first choice.
- Working Title: The Warrior.
Trivia / Kung Fu