A film role can ask an actor to look or behave very differently from their usual screen image. Some actors change their hairstyle, build or clothing, while others spend months learning a new skill or understanding a character’s daily life.

These changes can help audiences believe that they are watching a real person rather than a familiar star. Bollywood has seen several performances where an actor’s preparation became an important part of the film.

Here are five memorable examples of actors who changed their appearance or approach for a role.

1. Aamir Khan in Dangal

Aamir Khan underwent a major physical change for Dangal, in which he played wrestler Mahavir Singh Phogat.

The film follows Phogat as he trains his daughters to become wrestlers. To show the character at different stages of life, Khan appeared both as a heavier, older man and as a fit former wrestler.

The change was not limited to his appearance. The role also required him to understand the discipline and routine of a wrestler and to bring the character’s strict personality to the screen.

Dangal became one of the most widely discussed films of his career, and Khan’s transformation helped make the different stages of the character’s life believable.

2. Randeep Hooda in Sarbjit

Randeep Hooda took on a demanding role in Sarbjit, a film based on the life of Sarabjit Singh.

Hooda played a man whose years in prison had a serious effect on his health and appearance. For the role, he lost a significant amount of weight under supervision.

The physical change helped show the difficult conditions faced by the character, but the performance also depended on his expressions and body language.

Sarbjit was a challenging subject, and Hooda’s preparation drew attention to the effort involved in portraying a real person whose story was known to many viewers.

3. Amitabh Bachchan in Paa

In Paa, Amitabh Bachchan played Auro, a young boy with a rare genetic condition that causes rapid ageing.

The role required a detailed prosthetic makeup process to change Bachchan’s appearance. The makeup helped create the look of a child while allowing the actor to perform the character’s movements and expressions.

The transformation was central to the film because the story depended on viewers seeing Auro as a young boy rather than as a familiar senior actor.

Bachchan’s performance combined the physical work of the makeup process with a playful and emotional portrayal of the character.

4. Shah Rukh Khan in Fan

Shah Rukh Khan played two characters in Fan: film star Aryan Khanna and his devoted fan, Gaurav.

The role of Gaurav required Khan to appear younger and physically different from the superstar character. Makeup, visual effects and changes in movement helped create the contrast between the two men.

The film’s story also asked Khan to shift between two very different personalities. Aryan is a famous actor who is used to public attention, while Gaurav is an ordinary young man whose admiration becomes an obsession.

Playing both characters gave Khan a chance to explore the difference between a public image and the person behind it.

5. Hrithik Roshan in Super 30

Hrithik Roshan changed his usual polished screen image for Super 30, where he played mathematician and teacher Anand Kumar.

The film follows Kumar as he prepares students from low-income families for competitive engineering entrance exams. Roshan’s appearance was made more ordinary through changes in styling, clothing and body language.

His character spends much of the film teaching, guiding students and dealing with practical challenges. The role required a less glamorous look and a performance built around the teacher’s determination.

Super 30 gave Roshan a chance to play a real person whose work has had a major impact on students.

Final Thoughts

A physical transformation can help an actor enter a character’s world, but it is only one part of a performance. A convincing role also depends on voice, movement, emotion and an understanding of the person being portrayed.

From Aamir Khan’s wrestler in Dangal to Amitabh Bachchan’s young character in Paa, these films show how different kinds of preparation can support a story. Their transformations remain memorable because they helped audiences connect with the characters on screen.