Now, with Gryffindor's house jar still overflowing with all the points people dished out for his Attitude magazine spread, Matt has once again completely changed his appearance.
This time, his looks have been deliberately altered for an acting role, as he'll soon be gracing our screens in Series 2 of the BBC's Happy Valley - a drama following the life of a West Yorkshire-based police officer.
Matt will play the character of Sean, a young man who finds himself in a really dark place after developing a drink problem, and - as great as the show sounds, one thing in particular has caught everyone's eye. THAT TASH.
Growing his sideburns out and looking a little, er, bedraggled, we're gonna go out on a limb and claim he's a secret metamorphmagus. It would explain so much, wouldn't it?
Oh, and guess who's also starring in the production? MOANING MYRTLE, professionally known as Shirley Henderson.
It's like another miniature Hogwarts reunion up at the BBC. What a squad.
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