Gotham got us all fired up with the news that the legendary Alexander Siddig is going to play equally legendary Batman villain Ra's al Ghul.

Of course, the role of the immortal menace has previously been played by Liam Neeson (in 2005's Batman Begins) and Matt Nable (on Arrow) - so what is Siddig hoping to bring to the part?

Speaking exclusive to Digital Spy, the Game of Thrones actor revealed: "I really tried to be as ambiguous as possible. I've only done two episodes and as an actor in episodic television, I don't know what the next script is, so I'm confronted with finding a way to play something really dark in a more ambiguous way.

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"So I really tried to get him so ambiguous that he's almost liquid – that was the way I thought about it. You're really not sure if he's good or bad – no-one knows whether he's a demon or a saint, or a ghost, that's a line from the script.

"I suspect that kind of liquidity can only be fascinating. It certainly fascinates me, and I know I'm going to have fun for as long as I end up playing this character."

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[Above: Liam Neeson as Ra's al Ghul in 'Batman Begins']

Oh, and just to settle the debate right here and now - Siddig will be pronouncing the character's first name, Ra's, as "Raish".

"I looked at it and thought, 'I'll call him Raish' - I just really liked the Aramaic element, that was kind of cool and added an ancient aspect to the character, which I believe is true anyway.

"We'll see whether or not Warner Bros. or whoever the Gods are in that particular area are happy. I do believe the last incarnation with Liam Neeson who said 'Razz' - but I didn't feel like a Razz!"

Gotham returns to Fox on April 24 and airs on Channel 5 in the UK.

Alexander Siddig stars in the new audio play Alien: River Of Pain, available to pre-order now at www.audible.co.uk/RiverOfPain.

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