I always forget that Inigo Montoya star inCriminal Minds .

One of the wildest things about movies is watching actors absolutely lose themselves in their roles. Like, I love coming out of a movie and being like, “Wow, how on EARTH is that the same person?!”

And so here are 17 of the wildest examples of characters I genuinely cannot believe are played by the same people:

1.Elvis PresleyfromElvisand Feyd-Rautha Harkonnen fromDune: Part Two

2.Molly Weasley from theHarry Potterseries and Rosie Mulligan fromMamma Mia!

3.Troy Barnes fromCommunityand Teddy Perkins fromAtlanta

4.Danny Zuko fromGreaseand Edna Turnblad fromHairspray

5.Inigo Montoya fromThe Princess Brideand Jason Gideon fromCriminal Minds

6.Johnny Cash fromWalk the Lineand Arthur Fleck fromJoker

7.Caesar Flickerman fromThe Hunger Gamesmovies and George Harvey fromThe Lovely Bones

8.Dianna fromTrainwreckand the White Witch fromThe Chronicles of Narniaseries

9.Kate McCallister fromHome Aloneand Moira Rose fromSchitt’s Creek

10.Walter White fromBreaking Badand Hal fromMalcolm in the Middle

11.Penguin fromThe Batmanand Bobby Pellit fromHorrible Bosses

12.Cinderella fromCinderellaand Pamela Anderson fromPam & Tommy

13.The Joker fromSuicide Squadand Paolo Gucci fromHouse of Gucci

14.Trevor Reznik fromThe Machinistand Dick Cheney fromVice

15.Barbie fromBarbieand Queen Elizabeth I fromMary Queen of Scots

16.Charles Miner fromThe Officeand McCavity fromCats

17.Finally, Baron Vladimir Harkonnen from theDunemovies and Bill Anderson fromMamma Mia!

Austin Butler and Bill Skarsgård, side by side, with Austin Butler in a vintage-style outfit and Bill Skarsgård in futuristic armor

Left: Julie Walters as Molly Weasley in "Harry Potter." Right: Julie Walters as Rosie in "Mamma Mia!"

Donald Glover in casual clothing and Harry Styles as a period character in a costume with an ascot and jacket

John Travolta on the left as Danny Zuko from "Grease" in a leather jacket; on the right, as Edna Turnblad from "Hairspray" in a housecoat

Side-by-side images showing Mandy Patinkin as Inigo Montoya in "The Princess Bride" (left) and a modern photo of Mandy Patinkin (right) in a casual shirt

Joaquin Phoenix, left, in a retro setting with a cigarette and a microphone, and Joaquin Phoenix, right, dressed as the Joker with clown makeup in a bathroom

Stanley Tucci as Caesar Flickerman, looking serious in a suit and tie, and Stanley Tucci as George Harvey, wearing glasses and a sweater with a plaid scarf

Tilda Swinton shown in two images: on the left in modern attire with loose blonde hair, on the right portraying Jadis the White Witch with a crown and frizzy hair

Catherine O'Hara in a split image. Left: as Kate in "Home Alone," surprised expression. Right: wearing a white outfit with a statement necklace, red lipstick, and wavy hair

Two images of Bryan Cranston: Left, serious in a striped shirt as Walter White from "Breaking Bad." Right, surprised in a plaid shirt holding lottery cards from "Malcolm in the Middle."

Colin Farrell in split-screen: on the left, transformed as the Penguin in "The Batman" with makeup and prosthetics, and on the right, in a red shirt from "Horrible Bosses."

Lily James in a medieval-style gown with flowers in her hair and also in a modern setting, with a blonde wig, wearing a sleeveless top as Pamela Anderson

Close-up of Jared Leto as the Joker in makeup and costume, next to Jared Leto in prosthetics as Paolo Gucci wearing a blue checkered suit and pink shirt

Split image of Christian Bale in "The Machinist" on the left and in "Vice" on the right

Margot Robbie pictured in two different roles: one smiling in beachy attire with a large hat and jewelry, the other as a historical figure with elaborate costume and ruff collar

Idris Elba in a suit and tie on the left, and as the character Macavity in "Cats" wearing a hat and fur coat on the right

Images show an actor in two roles: as a heavily made-up character, topless with prosthetics, and in a separate image, casually dressed in a patterned shirt