A former Dewsbury schoolboy will hit the small screen tonight as he becomes the latest debutante in the grisly blockbuster Game of Thrones.

Dean Jagger, 37, who was a pro extreme sports athlete before going into acting, is playing Smalljon Umber in the series, which already stars Huddersfield actress, Lena Headey.

Dean was born in Dewsbury and from an early age he wanted to be an actor. He began in school productions at the age of 14.

He appeared in a number of stage productions, but was also heavily into sport.

He trained in boxing from the age of 16, and after school became a pro skater, travelling the globe and competing in events such as the X-Games and the Walt Disney Skating Challenge.

Dean Jagger as Smalljon Umber in Game of Thrones
Dean Jagger as Smalljon Umber in Game of Thrones

But he yearned to be an actor, and studied in London before landing his first roles.

He has appeared in a number of films, and was working on the comedy Trollied when he was told he had landed the role in Game of Thrones.

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He plays Smalljon Umber, the son of Greatjon Umber, the Lord of Last Hearth. After his father’s death he becomes the new Lord of Last Hearth and head of House Umber. Although he dislikes House Bolton, he sides with Ramsay Bolton to protect the North against the wildlings.

Dean said he is very excited to be in the series, but said he has found the experience “surreal”.

“I am very proud. It’s been unbelievable.”

Lena Headey, from Shelley, plays Cersei Lannister in the hit series.