*Gil Gerard as Capt. William "Buck" Rogers
- Erin Gray as Col. Wilma Deering
- Thom Christopher as Hawk
- Jay Garner as Admiral Efram Asimov
- Wilfrid Hyde-White as Dr. Goodfellow
- Barbara Luna as Koori
- Lance LeGault as Flagg
- David Opatoshu as Llamajuna
- Sid Haig as Pratt
- Kenneth O'Brien as Captain
- Felix Silla as Twiki
- Dennis Haysbert as Communication Officer
- Lavelle Roby as Thromis
- Michael Fox as High Judge
- Andre Harvey as Thordis
- Chris O'Connor as Young Lieutenant
- Timothy O'Keefe as Bailiff
- Ken Chandler as Court Clerk
- Susie Ewing as Simmons
- Jeff David as Voice of Crichton (uncredited)
- Bob Elyea as Voice of Twiki (uncredited)
Episode Crew
- Directed by Vincent McEveety
- Written by Norman Hudis
- Produced by Calvin Clements Jr., John Mantley, David J. O'Connell, David G. Phinney and John G. Stephens
- Music by Bruce Broughton
- Cinematography by Ben Colman
- Film Editor - George Potter
- Casting - Joe Reich
- Art Director - William H. Tuntke
- Set Decorator - Frank Lombardo
- Costume Designer - Al Lehman
Makeup Department
- Jerry Gugliemotto - Hair Stylist
- Werner Keppler - Makeup Artist
- Jack Stone - Makeup Artist
- Brenda Todd - Makeup Artist
Production Management
- Harker Wade - Unit Production Manager
Second Unit Director or Assistant Director
- Stephen Lillis - Second Assistant Director
- Robert Villar - First Assistant Director
Art Department
- Jerry Allen - Model Builder
- Ted Wilson - Carpenter (uncredited)