The singer posted a picture of himself in costume after filming his scene for the series. He also said this about his role,
“So I did my scene this morning for Game Of Thrones. I looked like this. Can’t say much just it’s no pivotal role. Fun!“
Lightbody didn’t say who he would be playing or whether or not he would be interacting with any of shows leads.
Season 3 of “Game of Thrones” will premiere on March 31, 2013. You can see a list of new cast members here.