Actors are public figures, and their faces tend to sell movies as much as the premise or spectacle can. Audiences latch on to a performance, so when they like a given person enough, they’ll go watch anything with them on it. That is, when you can tell the actor is in the movie or show.There are times where films hide their biggest stars behind make-up, voice work, or something as simple as never removing a mask. It’s not that they’re completely hidden, but unless you go out of your way to know who’s who, you could go the whole film without realizing the biggest names attached to them.cnx.cmd.push(function() {cnx({playerId: "106e33c0-3911-473c-b599-b1426db57530",}).render("0270c398a82f44f49c23c16122516796");});IMDbVin Diesel as Groot (Guardians of the Galaxy)Vin Diesel provides the voice of Groot, speaking variations of only three words throughout the Marvel films. Between the motion-captured tree design and limited dialogue, many casual viewers never realize it’s him.IMDbPedro Pascal as Din Djarin (The Mandalorian)Pedro Pascal stars as the Mandalorian, yet his face is hidden beneath a helmet for nearly the entire series. Stunt performers also portray the armored bounty hunter in many action scenes, further masking his presence.IMDbColin Farrell as Oz Cobb (The Penguin)Colin Farrell is virtually unrecognizable beneath extensive prosthetic makeup as Oz Cobb in The Batman and The Penguin. His dramatic physical transformation is so convincing that many viewers don’t recognize him until the credits.IMDbDoug Jones as the Amphibian Man (The Shape of Water)Doug Jones has built an entire career playing heavily made-up creatures. As the Amphibian Man in The Shape of Water, elaborate prosthetics completely conceal his appearance while allowing his expressive physical performance to shine.IMDbBill Nighy as Davy Jones (Pirates of the Caribbean: Dead Man’s Chest)Bill Nighy never physically wore the octopus-faced makeup audiences see. Instead, his motion-capture performance was transformed into the unforgettable CGI pirate captain, making his recognizable features disappear almost entirely.IMDbJohn Leguizamo as The Clown (Spawn)John Leguizamo is almost impossible to recognize as the grotesque clown known as The Clown. Buried beneath heavy prosthetics, exaggerated makeup, and a completely transformed voice, he disappears into one of the film’s most memorable villains.IMDbEmma Thompson as Nanny McPhee (Nanny McPhee)Emma Thompson wrote and starred in Nanny McPhee, but extensive prosthetics, facial warts, a bulbous nose, and crooked teeth make her nearly unrecognizable. The magical nanny’s appearance gradually changes as the story progresses.IMDbHugo Weaving as Megatron (Transformers)Hugo Weaving voices Megatron throughout the live-action Transformers films. With the villain appearing entirely as CGI and speaking through a heavily processed robotic voice, few viewers immediately recognize the acclaimed actor behind him.IMDbNicole Kidman as Virginia Woolf (The Hours)Nicole Kidman underwent an extraordinary physical transformation to portray author Virginia Woolf. A prosthetic nose, subtle aging makeup, and completely altered mannerisms made her nearly unrecognizable, earning her the Academy Award for Best Actress.IMDbBenedict Cumberbatch as Smaug (The Hobbit: The Desolation of Smaug)Benedict Cumberbatch performed Smaug using motion capture and voice acting. Once transformed into the enormous dragon, almost none of his physical appearance remains visible despite his unmistakably commanding performance.IMDbAlan Tudyk as Hei Hei (Moana)Alan Tudyk voices Hei Hei, the dimwitted rooster in Disney’s Moana. Rather than speaking dialogue, he contributes little more than comedic squawks and clucks, making his participation almost impossible to recognize.IMDbFrank Oz as Yoda (The Empire Strikes Back)Frank Oz doesn’t appear on screen at all, instead bringing Yoda to life through puppeteering and voice performance. The seamless illusion helped audiences believe they were watching a living Jedi Master rather than a puppet.IMDbTim Curry as Darkness (Legend)Tim Curry disappears beneath one of cinema’s most elaborate prosthetic makeup creations as Darkness. The massive horns, crimson skin, and towering costume make it nearly impossible to recognize the actor beneath the transformation.IMDbJohn Rhys-Davies as Gimli (The Lord of the Rings)John Rhys-Davies spent hours in elaborate dwarf makeup and prosthetics to play Gimli. The transformation was so extensive that many viewers fail to recognize the actor, who also voiced Treebeard in the trilogy.IMDbCharlize Theron as Aileen Wuornos (Monster)Charlize Theron underwent a remarkable physical transformation to portray serial killer Aileen Wuornos. Prosthetic makeup, weight gain, altered teeth, and completely different body language made the Oscar-winning performance almost impossible to recognize as the glamorous star.The post 15 Big Actors Who Starred in Roles Where You Can’t Tell It’s Them appeared first on Den of Geek.