The daughter of Leonard McCoy. She never appeared in Star Trek: The Original Series or Star Trek: The Animated Series, but was invented between seasons two and three of TOS by D. C. Fontana and DeForest Kelley.
She is mentioned in The Making of Star Trek:
However, he has a twenty-one-year-old daughter named Joanna, from that marriage. McCoy has properly provided for her well-being, hears from her as often as interstellar communications permits, but his duty aboard the Enterprise keeps them apart.
It was planned to have her appear on the show:
In a future story we will bring McCoy's daughter Joanna aboard. She will be a lovely girl, and Captain Kirk, of course, is going to be involved with her. Dr. McCoy is suddenly going to discover he is a father viewing Kirk from a father's perspective. An interesting and sometimes angry new McCoy-Kirk relationship will be seen.
| Title | Type | Date | Role |
|---|---|---|---|
| Rhonda | Story | 1971-08 | Sub |
| Prejudice | Story | 1975 | Main |
| Planet of Judgment | Book | 1977-08 | Appearance |