He developed passions for martial arts (tae kwon do) and writing when he was young; Kim has reflected on this.
I was getting beat up, fairly often, and also ignored in school, so I found I needed to channel my feelings of revenge and hurt into something constructive.... Tae kwon do worked for becoming physically respected, and writing proved the means for periodically emptying the vessel.
[1]He also played Loo in the comedy The Kentucky Fried Movie (1977) (in the segment "A Fistful of Yen"), the interpreter Cowboy in the Vietnam War film Go Tell the Spartans (1978), the erudite caveman Nook in the cult comedy Caveman (1981), Suki in the B movie Megaforce (1982), and Tony in the miniseries V (1983).
[2] His television guest appearances include Kung Fu, CHiPs, Police Story, The Secrets of Isis, C.P.O.
Sharkey, Fantasy Island, Serpico, Knight Rider, Sword of Justice, Matt Houston, Knots Landing, Max Headroom, Matlock and Alien Nation.