Every actor must transform themselves to some extent for their roles. However, this blog is dedicated to those who went the extra mile. Read ahead to look at some actors who transformed themselves physically and emotionally for the characters they were portraying.
Deepika Padukone in Chhapaak
Playing the role of an acid attack victim, Deepika Padukone had to undergo several hours of makeup to achieve the perfect look. But the physical aspects aside, the actress went into the psyche of the character she was playing and was able to show us the depths of her emotions. 
Source: Time
Amitabh Bachchan in Paa
If one role comes to mind where the actor is truly unrecognisable, it has to be Amitabh Bachchan in Paa. Playing the role of a child with a rare genetic disorder, Bachchan took his performance to new heights, helped immensely by the makeup and prosthetics. What made this even more exciting was that his son, Abhishek Bachchan, played his father's role.
Source: Film Companion
Shah Rukh Khan in Jawan
In one of his latest releases of 2023, Shah Rukh Khan surprised his fans with an entirely new getup. Throughout the movie, we see him donning different avatars to showcase various plot aspects. Mastering a double, SRK got into character with the help of heavy makeup and prosthetics. 
Source: India.com
Ranveer Singh in Padmaavat
Giving fierce a new meaning with his portrayal of the cruel ruler Khilji, Ranveer Singh stole the show in Padmaavat. While his costumes and makeup helped, the actor was able to make us step into the character's shoes with his acting. He later even confessed that to enter Khilji's mind truly, he had to go to a dark place during the film's shoot. 
Source: IMDb
Hrithik Roshan in Dhoom 2
In 'Dhoom 2,' Hrithik Roshan portrayed the character of a con man who put on various disguises, such as a royal queen, an elderly man, a dwarf and even a statue! Using prosthetic makeup made the transformation into the different personas possible and believable. 
Source: TOI