Unveiling the magic of versatility, an online forum filled with movie buffs discussed actors whose performances defied expectations and awed audiences. From dramatic transformations to surprising Character choices, these stars captivated hearts and minds in ways no one saw coming. If you've never seen some of these films, you'll want to check them out!

1- Robin Williams (Insomnia)

Robin Williams made a career out of playing roles that showcased his ability to deliver rapid-fire humor and engage in playful, zany behavior.  As a result, Williams was typecasted for his comedic genius. For this movie, however, he stepped outside that box by taking on a darker and more serious character. 

2- Adam Sandler (Click)

Most everyone recognizes Adam Sandler as a comedic actor known for his unique style of humor. With his performance in Click, Sandler leaves his signature slapstick comedy, exaggerated physical gags, and goofy characters for something a little different.

Unlike his usual on-screen antics, Sandler's role as Micheal Newman required him to delve into more emotional and dramatic territory. Throughout the movie, he effectively balances moments of humor with poignant and reflective scenes, showcasing the challenges and regrets of prioritizing work over family.

3- Kevin Costner (Mr Brooks)

Kevin Costner is known for playing his share of characters who exhibit determination, integrity, and a strong sense of justice. His part as the titular Mr. Brooks marked a departure from his traditional on-screen persona. 

In this psychological thriller, Earl Brooks is a successful businessman and family man who leads a double life as a serial killer. Costner is quite convincing as a detached high, functioning sociopath who suffers from murder-inducing hallucinations.

4- Robert Pattinson (Batman)

Since his performance in the Twilight Saga, Robert Pattinson has been typecast as a brooding and mysterious heartthrob. This act led to him being associated with the fantasy romance genre, and he gained a substantial fanbase. 

As Batman, Pattinson had to discard his “dreamy guy” demeanor to take on a darker and more complex character. He pulled off a solid Batman that was intriguingly different from Christian Bale. He was more aloof and yet still the caped crusader.

5- Ethan Hawke (Black Phone)

With his dynamic portrayals in movies like Training Day and Dead Poets Society, Ethan Hawke has shown himself to be a versatile and introspective actor who often takes on parts that require depth and a certain level of intellect.

A few movie lovers said they were surprised to see him go the villainous route as the grabber in Black Phone. This serial murderer kidnapped unsuspecting children in the neighborhood to torture and eventually kill them. That's much more sinister than Hawke's traditional roles. He is menacing, terrifying, and downright crazy in this role. He pulls this one off with flying colors!

6- Denzel Washington (Training Day)

Denzel Washington's role in Training Day marked a significant departure from his traditional on-screen persona. In this film, he portrays Alonzo Harris, a corrupt and morally ambiguous narcotics detective. He's the antagonist and play's opposite of Ethan Hawke, a green cop who still believes in the virtuosity of the system. Denzel awed audiences with his all-too-believable portrayal of a desperate, morally bankrupt detective.

7- Matt Damon (Interstellar)

Matt Damon's part in Interstellar is a far cry from Good Will Hunting or even The Bourne Identity. We're accustomed to Matt playing the white knight—a character with a strong sense of integrity, intelligence, and ambition. However, being Dr. Mann in this film cast him in a completely different light.

He subverts all of our expectations as he plays a scientist stranded on a distant planet; he's so desperate that he's willing to sabotage and even murder crew members just to save himself. I'd wager that this was purposeful by director Christopher Nolan to keep the audience off balance.

8- Dave Bautista (Guardian of the Galaxy)

Dave Bautista generally fits portrayals that utilize his imposing stature and background in professional wrestling for exciting action sequences. When we saw him as Drax the Destroyer, he displays a literal and straightforward sense of humor. He often misunderstands metaphors and figurative language as well, which is hilarious. This comedic element adds a lighthearted and humorous dimension to Bautista's performance—quite different, more stoic, and serious than traditional parts.

9- Bruce Willis (Sixth Sense)

Bruce Willis has been synonymous with action for years with his roles in the Die Hard Franchise. He's usually a tough, no-nonsense dude who excels in any part that involves physical combat. Several forum members said they enjoyed seeing him as Dr. Malcolm Crowe, a child psychologist dealing with personal struggles and trying to help a young boy who claims he can see ghosts.

10- Samuel Jackson (Unbreakable)

Samuel L. Jackson often gets roles where he's the strong, commanding presence known for being loud and powerful on screen. That's why it was pretty surprising to see him play a physically fragile character with a rare condition that gave him brittle bones in M. Night Shyamalan's superhero movie, Unbreakable. 

11- Jonah Hill (Moneyball)

Jonah Hill has tackled all sorts of personalities in his acting journey, but when you think of him, comedy probably comes to mind first. He made his mark in movies like Superbad, which got everyone talking. But in Moneyball, he showed off his serious acting chops. He played Peter Brand, this brainy guy fresh out of Yale who helps Brad Pitt's character, Billy Beane, build a winning baseball team. It was quite a shift from his usual loud and wild roles, but he totally nailed it.

12- Tom Hanks (Road to Perdition) 

Hanks really caught everyone off guard with Road to Perdition. It was the first time in a major movie that he was a villain. Now, don't get me wrong, his character turns out to be one of the more likable and honorable guys in this Oscar-nominated film, so there's still that aspect of Tom that we know and love. But still, it felt pretty strange to watch America's favorite actor mow down a bunch of guys on more than a few occasions.

13- Charlize Theron (Monster)

Charlize Theron, a true Hollywood beauty, kicked off her movie journey by taking up parts as the stunning girlfriend or wife. But then came Monster, a movie based on the life of serial killer Aileen Wuornos. It was a shocker for many because Theron, known for her looks, took on the role of a plain and not-so-attractive murderer. It's quite a transformation story – she put on 30 pounds, shaved her eyebrows, and even wore fake teeth to really bring it home.

14- Tom Cruise (Collateral)

For a good stretch of time, Tom Cruise stuck to roles where he was the epitome of cool, filled with confidence, and the hero, often all rolled into one. Then, along came Collateral, where he took on a completely different role – that of a merciless hitman. In this film, he played the bad guy opposite Jamie Foxx's down-to-earth, everyday character. The switch paid off big time, with both actors receiving heaps of praise for their acting. 

15- Elijah Wood (Sin City)

Elijah Wood embarked on his career journey as a young child, and his path kept unfolding through his teenage years. He took a significant step toward establishing himself as a serious actor through his involvement in the Lord of the Rings trilogy, spanning from 2001 to 2003. 

However, it became noticeable that the youthful and amiable actor was starting to be pigeonholed. To challenge this perception, he took on the part of a cannibalistic serial killer in Sin City. As expected, this move revealed his versatility, leaving audiences with no doubt that Wood had the range to tackle a wide array of characters.

Source: (Reddit).