EXCLUSIVE: Maisie Williams dons full Viking costume in brand new first-look photos ahead of Doctor Who debut

She rose to prominence for her main role as Arya Stark in much-loved fantasy series Game of Thrones.

And young Maisie Williams is continuing to rack up the credits in between shooting the highly-anticipated sixth season and has jumped ship to Doctor Who.

The 18-year-old actress - whose guest role in the long-running BBC One sci-fi drama was confirmed back in March - will make her debut on Saturday in an episode entitled The Girl Who Died and first-look photos have revealed more details about her character, Ashildr.

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First look: Maisie Williams is transformed into a Viking for her guest role on Doctor Who

First look: Maisie Williams is transformed into a Viking for her guest role on Doctor Who

Maisie dons full Viking costume in the teaser clip which has been released ahead of the show's airing on Saturday evening.

She also favours a lightly made-up face which is appropriately dirtied to fit in with the scene setting.

Her long brunette locks are styled into a plait crown with loose strands adding to the whole rugged theme.

Debut: Maisie, 18, joins Jenna-Louise Coleman (Clara Oswald) and Peter Capaldi (The Doctor) as Ashildr in an episode entitled The Girl Who Died which airs on Saturday 17th October

Debut: Maisie, 18, joins Jenna-Louise Coleman (Clara Oswald) and Peter Capaldi (The Doctor) as Ashildr in an episode entitled The Girl Who Died which airs on Saturday 17th October

Dream team: The episode is set in a 'little Viking village where all the warriors have just been slaughtered'. The Doctor and Clara have 12 hours to train some farmers into warriors, as Ashildr (Maisie Williams) declares war upon the Mire

Dream team: The episode is set in a 'little Viking village where all the warriors have just been slaughtered'. The Doctor and Clara have 12 hours to train some farmers into warriors, as Ashildr (Maisie Williams) declares war upon the Mire

Though the trailer doesn't give much away about the series of events, the episode sees Clara Oswald (Jenna-Louise Coleman) and The Doctor (Peter Capaldi) visit a little Viking village - Ashildr's hometown - where all the warriors have just been slaughtered.

The Doctor and Clara have 12 hours to train some farmers into warriors as Ashildr declares war upon the Mire.

Bristol-born Maisie is offered the chance to discuss joining the BBC One cast in the short clip and says: 'When it was first announced that I was going to be on Doctor Who, everyone lost their minds a little bit because you're crossing over fandoms [from GOT to Doctor Who].

Suspicious: The Doctor can't take his eyes of Ashildr when first clocking her which arouses his assistant's suspicions

Suspicious: The Doctor can't take his eyes of Ashildr when first clocking her which arouses his assistant's suspicions

'To the primitive mind, advanced technology can seem like magic': He pulls a yo-yo out of his pocket and hints he'll use it to distract the leader of the village

'To the primitive mind, advanced technology can seem like magic': He pulls a yo-yo out of his pocket and hints he'll use it to distract the leader of the village

The right role: 'It's really, really exciting working on it. I'm so proud to be a part of it now', Maisie said

The right role: 'It's really, really exciting working on it. I'm so proud to be a part of it now', Maisie said

'It's really, really exciting working on it. I'm so proud to be a part of it now.'

She added: 'It just looks great with all of us in our Viking outfits and Jenna in her spacesuit and the Doctor in his cool coat with his crazy sunglasses. It makes a cool, interesting dynamic on screen.'

Talking at the time her role was announced, she said: 'I’m so excited to be working on Doctor Who as it’s such a big and important part of British culture. I can’t wait to meet the cast and crew and start filming, especially as we’ll be shooting not too far from my home town.'

And while exact details about her character's personal traits won't be revealed her first episode has been aired, show boss Steven Moffat teased: 'She is going to challenge the Doctor in very unexpected ways. This time he might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell.'

Catch Maisie's Doctor Who debut on Saturday 17th October on BBC One at 8.20pm 

'She is going to challenge the Doctor in very unexpected ways': Viewers have been urged to expect the unexpected when it comes to the youngster's character

'She is going to challenge the Doctor in very unexpected ways': Viewers have been urged to expect the unexpected when it comes to the youngster's character

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