5. Jon Lormer
Jon Lormer is known for appearing on Star Trek a total of three times. However, many Trekkies will be quick to correct that number on a technicality. Lormer actually appears in five episodes when you consider that he not only stars in “The Cage,” but his character appears in the flashbacks of those events in “The Menagerie: Part 1” and during Captain Kirk’s recap in “The Menagerie: Part II.”
Add those up with his other roles in the TOS episodes “The Return of the Archons” and “For the World Is Hollow and I Have Touched the Sky” and Lormer appears in five shows.
Lormer didn’t have anywhere near as much screen time on the Batman TV series. Lormer appears in a brief role as Professor Dactyl, who converses with Barbara Gordon — one of the most iconic Batman/Star Trek crossover characters.
No, Lormer isn’t the special guest villain. In this case, the honor falls to Vincent Price’s Egghead and Anne Baxter’s Olga, Queen of the Cossacks, in the season 3 episode “How to Hatch a Dinosaur.” Oh, that reminds me…