An acting legend looked unrecognisable as he got into character while filming in Dublin on Tuesday.

The actor's appearance was dramatically transformed as he sported thick grey hair and a bushy beard for the outdoor scene.

Filming on North Great George's Street in the Irish capital, the star also wore a dark navy coat with matching trousers and black shoes.

The star, who was filming the upcoming series Sherlock & Daughter, added to his look with a  brown bow tie and a cane.

But can you guess who he is?

An acting legend looked unrecognisable as he got into character while filming in Dublin on Tuesday

The actor's appearance was dramatically transformed as he sported thick grey hair and a bushy beard for the outdoor scene

Filming on North Great George's Street in the Irish capital, the star also wore a dark navy coat with matching trousers and black shoes

That's right, it's David Thewlis.

The actor has appeared in a wide variety of film and TV roles throughout his near 40-year career. 

He memorably portrayed benevolent Hogwarts professor Remus Lupin in the Harry Potter film series.

David has also had roles in films including Seven Years In Tibet, The Boy In The Striped Pajamas and The Theory Of Everything.

He will also portray a character called Peylak in the upcoming third and fourth Avatar sequels, due to be released in 2025 and 2029.

On TV, he appeared in the critically acclaimed series Fargo along with appearances in Only Fools And Horses and The Sandman. 

In Sherlock & Daughter, David portrays the iconic fictional detective who becomes embroiled in a malevolent conspiracy involving his archenemy Porfessor Moriarty (portrayed by Dougray Scott). 

Sherlock joins forces with Amelia Rojas (Blu Hunt), a young American woman whose mother was recently murdered.

That's right, it's David Thewlis (pictured with his co-star Blu Hunt)

The actor has appeared in a wide variety of film and TV roles throughout his near 40-year career

David has had roles in films including Seven Years In Tibet, The Boy In The Striped Pajamas and The Theory Of Everything 

He memorably portrayed benevolent Hogwarts professor Remus Lupin in the Harry Potter film series.

As they work together, Amelia begins to suspect that Sherlock may be her long lost father. 

The series, which was announced in February, will consist of eight hour-long episodes directed by Bryn Higgins.

Sherlock & Daughter will air in the UK and Ireland on Discovery+ and in America on The CW.