Spotting a famous actor is usually the easy part of watching a movie or TV show. Then there are those performances that send people straight to IMDb because the familiar face on screen somehow refuses to register. Sometimes hours of prosthetics deserve the credit, while a different haircut, accent or physical transformation can occasionally do just as much damage. A few actors have become so good at disappearing into characters that audiences only discovered who they were when the credits rolled. Looking back, some seem completely obvious. Others still require a second look even when you already know exactly who is underneath all that makeup. Here are 15 big actors fans couldn’t even recognize in a role.©IMDbColin Farrell — The BatmanFarrell virtually disappeared beneath prosthetics to become Oz Cobb, to the point that his transformation into the Penguin became almost as much of a talking point as the performance itself.©IMDbTom Cruise — Tropic ThunderA bald cap, prosthetics, enormous hands and a very committed dance routine turned one of the world’s most recognizable movie stars into Les Grossman. Plenty of viewers only realized it was Cruise when the credits arrived.©IMDbCharlize Theron — MonsterTheron gained weight, changed her eyebrows and wore prosthetic teeth to play Aileen Wuornos, creating a transformation almost completely removed from her usual screen appearance.©IMDbGary Oldman — Darkest HourOldman spent hours being transformed into Winston Churchill with prosthetics and makeup, making one of Hollywood’s great cinematic chameleons particularly difficult to spot.©IMDbTilda Swinton — SuspiriaSwinton secretly played elderly psychiatrist Dr. Josef Klemperer under extensive prosthetics, and the production initially even credited the character to a fictional actor named Lutz Ebersdorf.©IMDbTom Hardy — Peaky BlindersHardy’s huge beard, glasses and distinctive voice made Alfie Solomons surprisingly difficult to connect with the actor underneath, and plenty of viewers have admitted they did not recognize him at first.©IMDbJared Leto — House of GucciBetween the bald head, prosthetic face and dramatically altered body shape, Leto’s Paolo Gucci barely resembles the actor playing him.©IMDbNicole Kidman — The HoursA prosthetic nose and deliberately understated styling transformed Kidman into Virginia Woolf so effectively that her familiar features almost disappear.©IMDbChristian Bale — ViceBale gained weight, shaved his head and changed his entire silhouette to play Dick Cheney, becoming nearly unrecognizable before he even started talking.©IMDbLily James — Pam & TommyJames looked so different as Pamela Anderson that early images from the series caused plenty of double takes, with makeup, hair and prosthetics reshaping her familiar appearance.©IMDbSteve Carell — FoxcatcherCarell’s prosthetic nose, altered hairline and unsettling stillness made John du Pont look worlds away from the actor audiences knew from comedy.©IMDbRooney Mara — The Girl With the Dragon TattooBleached eyebrows, piercings, jet-black hair and Lisbeth Salander’s severe wardrobe made Mara look strikingly different from the actress audiences had seen only a year earlier in The Social Network.©IMDbEmma Thompson — Nanny McPheeThompson hid behind a huge prosthetic nose, snaggletooth, wrinkles and a unibrow as Nanny McPhee, with the character deliberately becoming less unusual-looking as the story progresses.©IMDbBrendan Fraser — The WhaleFraser’s transformation into Charlie relied on extensive prosthetic makeup that dramatically changed his face and body, making the actor difficult to recognize in many scenes.©IMDbCate Blanchett — I’m Not ThereBlanchett became Bob Dylan-inspired musician Jude Quinn with dark curls, sunglasses and a complete change in mannerisms, creating a transformation that required almost none of the heavy prosthetics elsewhere on this list.The post 15 Big Actors Fans Couldn’t Even Recognize in a Role appeared first on Den of Geek.