Chuck O'Brien
Chuck O'Brien is a stuntman and occasional actor, who worked as William Shatner's stunt double in the  first season episode .

During his short body of work, O'Brien performed stunts and played small roles in a number of films, such as First to Fight (1967, written by Gene L. Coon, featuring Basil Poledouris and music by Fred Steiner) and The Great Bank Robbery (1969, with Elisha Cook, John Fiedler and Bill Zuckert). He also played bit roles in several episodes of The Wild Wild West.

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Stunt performers
TOS performers
Performers