He did come back for The Animated Series. With a drug that makes women fall in love with men, and men to… Become best friends with men.
Mudd’s Passion , AKA the episode that probably launched a thousand slash fanfics. 😉
It’s too bad Mudd never turned up in the movies. Imagine how Trek IV could have gone if Kirk and Company had to go on the lam from the Federation and/or the Klingons, and in desperation turn to Mudd for help?
There was a rumor after Roger C. Carmel’s passing that he had talked to Shatner about reprising the role. Don’t know if there’s any truth to it.
Mudd also turned up in the 25th anniversary PC game. Can’t recall who did the voice, but it was a good impression of Carmel.