7 A-List Actors Who Hid in Star Trek Shows

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The Star Trek series is a landmark achievement in science fiction, with a history spanning many years of movies and TV shows. It’s currently enjoying a big comeback on television, thanks to popular shows like Star Trek: Strange New Worlds, Star Trek: Lower Decks, and the recently finished Star Trek: Discovery. To mark the 60th anniversary of the franchise in 2026, Paramount+ released Star Trek: Starfleet Academy, which follows a new group of cadets in the 32nd century. The studio is also planning future projects to keep the series going, including potential spinoffs from Star Trek: Discovery.

Creating so much TV requires a huge number of actors, which is why the franchise regularly features hundreds of well-known performers. Because the show builds such a detailed universe, major stars sometimes make quick, unnoticeable appearances. They might be hidden under heavy makeup to play aliens, or only provide their voice, which is then digitally changed. Also, the old-fashioned weekly format often included famous guest stars appearing in just one episode. These short roles are usually only spotted by the most devoted fans who follow every season closely.

7) Dwayne “The Rock” Johnson

Before Dwayne “The Rock” Johnson became a huge movie star, he had a surprising role on Star Trek: Voyager. In the sixth season episode “Tsunkatse,” he played an alien gladiator called The Champion. His character fought Seven of Nine (Jeri Ryan) in a hand-to-hand battle, and the fight choreography even included some of his famous wrestling moves. Johnson was one of the most recognizable celebrities to appear in disguise on the show, with only subtle facial ridges to suggest he wasn’t human. Many viewers are surprised to see him in the episode today, especially since it was filmed before his breakout role in The Scorpion King made him a global star.

6) Joel Grey

Joel Grey is a celebrated actor known for his work in both theater and film, winning an Academy Award, Tony Award, and Golden Globe for his unforgettable role as the Master of Ceremonies in Cabaret. He also took on a dramatic role in the second season of Star Trek: Voyager, in an episode called “Resistance.” Grey played Caylem, an alien who is struggling with delusions and mistakenly believes Captain Janeway is his daughter. The episode required significant makeup to age Grey and transform him into a weak, worn resident of the planet Alsaur. His performance is the emotional core of the story, showcasing his acting skills in a deeply moving depiction of loss and mental deterioration.

5) Iggy Pop

Iggy Pop, known as the “Godfather of Punk,” made a surprising appearance in an episode of Star Trek: Deep Space Nine called “The Magnificent Ferengi.” He played Yelgrun, a serious and unimpressed negotiator from a cloned race called the Vorta. Hidden under pale makeup, pointed ears, and a military uniform, the usually energetic rock star transformed into a character who seemed tired and bored. It was a clever casting choice – a famously dynamic performer forced to remain still and deliver dry, bureaucratic lines while dealing with the frustrating incompetence of his Ferengi captors. The heavy makeup and the need to completely hide his usual wild personality made Iggy Pop almost unrecognizable to viewers.

4) Jason Alexander

Jason Alexander is best known for playing George Costanza on the hit show Seinfeld, a role that made him a household name. Interestingly, despite his widespread recognition, he cleverly disguised himself during a guest appearance on Star Trek: Voyager. In the episode “Think Tank,” Alexander played Kurros, the smooth-talking and cunning leader of an alien group who offered solutions to problems in exchange for advanced technology. He transformed into the character with the help of significant prosthetic makeup, including an enlarged head and prominent facial ridges, completely changing his appearance. This allowed him to move away from his comedic role and deliver a convincingly intimidating performance as a highly intelligent and manipulative alien.

3) James Avery

James Avery is best known as Uncle Phil, the strong but caring father figure from the 1990s show The Fresh Prince of Bel-Air. While his powerful voice and commanding presence made him a familiar face on television, he looked completely different when he guest-starred on Star Trek: Enterprise. Avery played General K’Vagh, a Klingon military leader fighting to save his empire from a deadly disease. To transform into the fierce warrior, Avery was covered in Klingon prosthetics – ridges, heavy facial hair, and dark armor – completely hiding his recognizable appearance. He also used a harsh, gravelly voice, suppressing his usual warmth, creating a total physical and vocal change.

2) Wallace Shawn

Wallace Shawn is instantly recognizable thanks to his unique voice and appearance, and a successful career including roles in films like The Princess Bride and the Toy Story movies. That’s what makes his role in Star Trek: Deep Space Nine so remarkable – he played Grand Nagus Zek, the leader of the Ferengi, while completely hidden under layers of makeup. The character required heavy prosthetics – oversized ears, pointed teeth, and wrinkles – to create the look of the Ferengi. Because the makeup was so transformative, Shawn had to rely on his distinctive way of speaking to show Zek’s greed and surprising intelligence.

1) Chiwetel Ejiofor

Chiwetel Ejiofor, a celebrated actor nominated for an Academy Award and known for powerful roles in films like 12 Years a Slave and Doctor Strange, has a surprising and largely unnoticed connection to Star Trek. He voiced the Makers, enigmatic beings of light from the planet Kasq, first appearing in the fifth episode of Star Trek: Starfleet Academy. However, Ejiofor never appears on screen, and his voice is heavily altered with digital effects to sound otherworldly. The changes to his voice are so significant that it’s nearly impossible to recognize him. This makes him the most secretly involved major actor in the history of Star Trek.

What surprise celebrity appearance in any Star Trek show or movie was the most shocking when you first saw it? Share your thoughts in the comments and join the discussion in the ComicBook Forum!

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2026-03-06 03:42