Top 15 Actors And Actresses Who Played Aliens

15. Simon Pegg in Star Wars: The Force Awakens (2015)

Simon Pegg disappears so completely beneath Unkar Plutt’s heavy prosthetics that the cameo feels like an elaborate practical joke aimed at anyone expecting the star of Shaun of the Dead. As Jakku’s bullying junk dealer, he turns limited screen time—and Rey’s miserable ration offer—into a compact portrait of petty power. The punishing Abu Dhabi heat makes the transformation even more impressive: Pegg is sweaty, grotesque, and instantly at home in a galaxy full of rubber masks and terrible landlords. | © Lucasfilm

14. Pom Klementieff in Guardians of the Galaxy Vol. 2 (2017)

Mantis arrives as Ego’s sheltered empath, giving Pom Klementieff the tricky job of making innocence funny without making the character foolish. Her enormous reactions and hesitant speech suggest someone discovering friendship in real time, while her powers expose Peter Quill’s private feelings and the sadness hiding beneath Drax’s blank expression. Under the antennae and black contact lenses, Klementieff creates a sweet cosmic oddball who fits this dysfunctional crew almost suspiciously well. | © Marvel Studios

13. Taika Waititi in Thor: Ragnarok (2017)

Apparently, directing a giant superhero sequel was not enough, so Taika Waititi also gave Thor one of his strangest new friends. Korg’s rocky body came through motion capture, but the joke lives in the contrast between a towering warrior and Waititi’s soft New Zealand delivery, inspired by Polynesian nightclub bouncers he knew back home. Every failed-revolution update and awkward observation lands because Korg sounds less like a gladiator and more like the nicest man trapped beside you at a barbecue. | © Marvel Studios

12. Dave Bautista in Guardians of the Galaxy (2014)

Drax enters the MCU looking like the obvious muscle, then Dave Bautista quietly makes literal-mindedness his sharpest weapon. The gray makeup, red scar patterns, and wrestler’s frame sell the “Destroyer” part; the clipped timing and complete inability to recognize metaphors provide the laughs. Crucially, Bautista never treats Drax as a punchline from the inside. His grief over the family Ronan murdered remains visible beneath the threats and deadpan confusion, giving the comedy a bruised heart rather than just an impressive set of shoulders. | © Marvel Studios

11. Josh Brolin in Avengers: Endgame (2019)

Thanos is technically a digital giant, yet Josh Brolin keeps him from feeling like an expensive animated obstacle. In Endgame, he distinguishes the weary farmer encountered during the opening from the younger warlord pulled forward from the past. That second Thanos is less philosophical, more openly furious, and Brolin adjusts the performance accordingly. His restrained voice and patient stare continue to project control—even when the character decides the entire universe deserves a much uglier reset. | © Marvel Studios

10. Karen Gillan in Guardians of the Galaxy (2014)

Karen Gillan shaved her red hair and spent hours beneath blue makeup to introduce Nebula as a blade with a pulse. Her tightly controlled voice, rigid posture, and occasional flashes of panic make Thanos’s cybernetic daughter feel conditioned for obedience rather than naturally cruel. The film gives her less warmth than later installments would, but Gillan plants the evidence early: every clash with Gamora carries the resentment of a sister who has been punished, rebuilt, and taught that losing is a moral failure. | © Marvel Studios

9. Peter Mayhew in Star Wars (1977)

Chewbacca never speaks a word audiences can understand, yet Peter Mayhew makes his mood perfectly clear before the soundtrack contributes a single Wookiee growl. His height provides the unforgettable silhouette, but the performance lives in smaller choices: irritated head turns, nervous fidgeting, sudden bursts of temper, and effortless physical chemistry with Harrison Ford. Ben Burtt later assembled Chewie’s voice from animal recordings; Mayhew supplied the warmth, loyalty, and comic timing that made a walking carpet feel like Han Solo’s oldest friend. | © Lucasfilm

8. Vincent D’Onofrio in Men in Black (1997)

Vincent D’Onofrio does not merely play an alien wearing a farmer’s skin; he reverse-engineers how a giant cockroach might operate knees, teeth, and language after reading the human manual upside down. Restrictive leg braces helped create Edgar’s unforgettable lurch, while the mangled voice turns a request for sugar water into both comedy and body horror. Rick Baker’s Oscar-winning makeup deserves its flowers, but the wonderfully crooked physicality belongs to D’Onofrio—and it remains the movie’s finest special effect. | © Columbia Pictures

7. Seth Rogen in Paul (2011)

Giving a gray alien Seth Rogen’s voice sounds like a joke that wrote itself, and Paul wisely leans into the collision. Rogen supplied both the vocals and motion-capture reference, giving the digital visitor his familiar slouch, rasp, and mildly baked confidence. Instead of behaving like a mysterious celestial messenger, Paul swears, complains, offers unsolicited opinions, and treats government captivity as one long inconvenience. He is essentially an extraterrestrial houseguest who has seen every science-fiction movie and is tired of correcting them. | © Universal Pictures

6. Zoe Saldana in Avatar (2009)

Avatar’s technology received most of the headlines, but Neytiri works because Zoe Saldaña never lets the machinery flatten her. Through full performance capture, she gives the Na’vi warrior a complete physical vocabulary: alert stillness, explosive rage, wary amusement, and grief that needs no human translation. Neytiri begins as Jake’s reluctant teacher, yet Saldaña keeps her from becoming a tour guide with blue skin. Pandora feels inhabited because she performs as though its language, rituals, and threatened forests existed long before the camera arrived. | © 20th Century Fox

5. Natasha Henstridge in Species (1995)

Species turns Sil into a deliberate contradiction: a laboratory-made alien-human hybrid who looks perfectly ordinary until instinct takes over. Natasha Henstridge, making her film debut, plays the adult human form as a predator still learning the social choreography of eye contact, attraction, and trust. The full H.R. Giger-designed creature required additional performers and effects, so Henstridge’s real achievement is selling the disguise. Even while standing motionless in a crowd, she makes Sil appear to be studying humanity rather than belonging to it. | © Metro-Goldwyn-Mayer

4. Bolaji Badejo in Alien (1979)

Bolaji Badejo had never acted professionally when a casting scout noticed his extraordinarily tall, slender frame in a London pub. Ridley Scott saw exactly what the Xenomorph needed: proportions that prevented audiences from locating an ordinary man inside H.R. Giger’s suit. Mime lessons and tai chi training helped Badejo develop the creature’s slow, deliberate movement, replacing monster-movie stomping with something eerily graceful. Alien became his only film credit, but one was enough to give science fiction its most unsettling silhouette. | © 20th Century Fox

3. Zachary Quinto in Star Trek (2009)

Recasting Spock could have gone disastrously wrong; Zachary Quinto instead finds a version that honors Leonard Nimoy without spending two hours impersonating him. His stillness and careful diction preserve the Vulcan discipline, while the destruction of his home planet leaves anger pressing visibly against it. This Spock is younger, more combustible, and still negotiating the fault line between his Vulcan father and human mother. The pointed ears signal the alien, but the performance lives in the emotions he keeps almost—but never completely—under control. | © Paramount Pictures

2. Lee Pace in Guardians of the Galaxy (2014)

Lee Pace plays Ronan the Accuser as if every sentence were being carved into a monument while he speaks it. Buried beneath blue-black makeup and heavy armor, he slows his movements, drops his voice, and gives the Kree zealot the ceremonial menace of a fanatic convinced genocide is sacred duty. Ronan is surrounded by funnier, livelier characters, so Pace refuses to compete on their frequency. He becomes the humorless wall they bounce against—and the rare villain capable of taking a dance-off as a personal insult. | © Marvel Studios

Michael Rooker in Guardians of the Galaxy 2014 1

1. Michael Rooker in Guardians of the Galaxy (2014)

Yondu could have been a blue secondary villain with a useful arrow; Michael Rooker gives him the weathered soul of a space pirate who accidentally became a father. His rasp, sideways grin, and whistle-controlled weapon make every threat entertaining, but the performance grows most revealing around Peter Quill. Yondu demands payment like a captain, complains like an exasperated parent, and quietly smiles when Peter fools him with a troll doll. Rooker finds affection where the character would rather swallow glass than say it aloud. | © Marvel Studios