"Game of Thrones" actor teases introduction of Lem Lemoncloak

Actor Johannes Haukur has given "Game of Thrones" fans something of a spoiler (and there are more spoilers ahead in this post).

The actor portrayed one of three members of the Brotherhood Without Banners on last Sunday's episode, and was ostensibly responsible for the massacre of Brother Ray's community.

But now fans will know the identity of one of the men. Haukur revealed on Twitter that he will play none other than Lem Lemoncloak, one of the Brotherhood's most brutal members, as readers of "A Song of Ice and Fire" know.

He wrote on Twitter, "Officially confirmed that I will be in next weeks episode of#GameOfThrones Episode 8 as sweet old Lem Lemoncloak."

• HBO