Harry Melling, who played Dudley Dursley in the Potter films, guest starred on this past weeks episode of Merlin which is entitled “The Sorcerer’s Shadow” playing Gilli. For those of you who are in the UK you can watch the episode here. And as for those of use in the US we will have to wait for Series 3 to air in the US (which will be in early 2011 according to TV Guide), unless you watch it in an illegal manner…which I do not condone.

Also in an interview he mentioned how he had to wear a fat suit for the final Potter film.

The 21-year-old Merlin star plays Harry’s cousin in the Harry Potter films, but had to have the extra weight added after he shed the pounds over the years. “It was quite funny because I had a big fatsuit on in this film and face prosthetics – I do look a bit different because Dudley was a very piggish character and about three years ago I lost quite a considerable amount of weight,” he said.

“It was bizarre, you feel really big and my mobility was affected. However, it is amazing to feel light but within someone that should feel really heavy, so that was a fascinating contrast. It was interesting in terms of the physicality and thinking about how he would hold himself.”

His weight loss also ensures that he is rarely recognised on the streets. “No I don’t, which is really beyond amazing! It means that I can lead a normal life without the baggage of people running after me and shouting things at me,” he revealed. “It was an active decision to try and change that and hopefully I can continue to do that throughout my career and be as mercurial and changeable as possible.”