According to the Andrew Manson Personal Management Ltd, actor and martial artist Dave Legeno has been cast as Fenrir Greyback in Harry Potter and the Half-Blood Prince. He has been featured in such films as Elizabeth: The Golden Age, Batman Begins, and Stormbreaker.

Here are some photos of Dave:







We await confirmation from Warner Brothers.

Source: The Snitch

UPDATE: An interview with Dave and the Chatshow Network, dated almost two years ago, can be viewed here. In it, Dave talks about the various jobs he's had throughout life, including acting.