In a surprise move, director Bryan Singer announced the addition of Tyrion Lannister himself, Peter Dinklage, to the cast of X-Men: Days of Future Past via his Twitter last night.

The tweet read, “Officially like to welcome #PeterDinklage from #GameofThrones to #XMEN #DaysofFuturePast Very very excited!”

No confirmation on who Dinklage will be playing but many speculate that he will take on the role of Puck, a member of the Canadian superhero group Alpha Flight.

Dinklage will be joining Hugh Jackman, Jennifer Lawrence, Patrick Stewart, Michael Fassbender and several other big names in the film, which is set for release July 18, 2014.