Game Of Thrones Season 5: 10 Perfect Castings We'd Love To See

3. Septa Unella - Olivia Colman

Septa Unella is a supporting character in the next season of the show, where she will have a close relationship with one of the main characters. There, that's all we can say without going into spoiler territory. She's another member of the religious order that populates King's Landing (and most of Westeros, to be honest), and she has the honor of being one of the Most Devout, which is a counsel of high ranking clergy that rule the Faith of the Seven. We couldn't tell you why, but when we heard that this role was being cast, we couldn't stop thinking about Olivia Colman. She's one of the most accomplished actresses in Britain today, having recently won her third BAFTA for her work on Broadchurch, and she's been on pretty much every other show, so why not jump at the opportunity to feature her on Game of Thrones when you've got the chance?