One might immediately assume that William Shatner or Leonard Nimoy would be the defending champions, but, perhaps surprisingly, it’s not even close to them.
Shatner appeared in only seven movies and in every episode of the post-pilot Trek throughout the 1970s, leaving him with a low score. 106. No, for the real record holders, we need to see longer “Trek” shows. Keep in mind that “The Next Generation,” “Deep Space Nine,” and “Voyager” all ran for seven seasons, while the original series ran for only three.
Nimoy yes – over eight feature films, original series, pilot film, animated series, a two-part episode of “TNG” and guest archive footage on “DS9”, “Discovery” and “Prodigy” – only appear in 114 iteration of Trek.
Kate Mulgrewwho played Captain Janeway in “Voyager” and then “Prodigy” has done a lot more work than the old actors, appearing in 181 movie episodes. She will continue to appear in “Prodigy”, so her numbers will only increase.
Jonathan Frakes appeared on more shows than Stewart, but had a slightly lower score. Between “TNG”, the studio’s films, “Picard”, “Lower Decks,” DS9, “Voyager” and “Enterprise”, Frakes appeared in a good round. 200 movie episodes. When he shows up as carrier clone Thomas Riker, that number is doubled, just for fun.
Supposedly he will appear with a number of slots in all ten episodes of the third season of “Picard,” Brent Spiner – who has played many members of the Soong family and their generation of androids over generations and TV shows – will join 205 Trip.
https://www.slashfilm.com/992646/which-star-trek-actor-appeared-in-the-most-episodes/ Which Star Trek actor appeared in the most episodes?