Characters who recurred in TOS
- Christine Chapel (played by Majel Barrett)
- Also recurred in Star Trek films
- DeSalle (played by Michael Barrier)
- John Farrell (played by Jim Goodwin)
- Galloway (played by David L. Ross)
- Harper (played by Sean Morgan)
- Kyle (played by John Winston)
- Also recurred in Star Trek II: The Wrath of Khan
- Lemli (played by Roger Holloway)
- Leslie (played by Eddie Paskey)
- Also seen in DS9: "Trials and Tribble-ations"
- M'Benga (played by Booker Bradshaw)
- Angela Martine (played by Barbara Baldavin)
- Harry Mudd (played by Roger Carmel)
- Also recurred in TAS: "Mudd's Passion"
- O'Neil (played by Sean Morgan)
- Palmer (played by Elizabeth Rogers)
- Janice Rand (played by Grace Lee Whitney)
- Also recurred in:
- Kevin Riley (played by Bruce Hyde)
- The Federation's computer voice (played by Majel Barrett)
- The only performance to be featured in all Star Trek series.
Characters who recurred in other series
- Alice
- Amanda Grayson (played by Jane Wyatt)
- Cyrano Jones
- Kang
- Koloth
- Kor
- Korax
- Sarek (played by Mark Lenard)
- T'Pau
- White Rabbit
See Also
- Main character crossover appearances