Colin Morgan wants viewers to see a darker side to Merlin.

The 25-year-old actor portrays the mythical wizard as a young man in the BBC TV series --Merlin of the same name and revealed instead of his character hiding his emotions all the time, he would love to show his "damaged" side when the show returns for a fourth series next year.

He explained to BANG Showbiz: "We often see Merlin go through so many situations in that he has to put up a front and appear pretty jolly and suppress a lot of his true emotions. I'd like to see a lot more of the raw things come out from under the surface and get to see him in a more mature and damaged way.

"I think that is dangerous territory for what it is supposed to be a comedy show but our audience are growing up, as are the characters and I think it's important that those elements are incorporated into it as long as we don't lose touch with the characters and change too much. But people do change and I think anything that moves towards a maturity and an unearthing of true emotions I think would be great."

Colin co-stars with Anthony Head and 'One Foot in the Grave' star Richard Wilson in Merlin- which has been picked up globally in countries including Germany, France, Australia, Norway and Denmark - and revealed he is constantly picking up tips from them.

He said: They're amazing and so well-renowned for a reason because they're very good and very nice and very professional and there's lots to be learned from that. Of course they're icons in their own right and as a young actor when you're working towards your own version of that, it helps to learn from the best."

Merlin: The Dragon Tower attraction is opening at Warwick Castle on 16th April. To book tickets please visit http://www.warwick-castle.com