Also known as ''The Queen of Thorns,'' Lady Olenna is the grandmother of Margaery and Loras Tyrell and is, in many ways, the true leader of their powerful family.
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Mackenzie Crook as Orell
A wildling raider, Orell is a ''warg'' or ''skinchanger,'' with the ability to enter the mind of an animal and control its actions.
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Clive Russell as Bryndon ''The Blackfish'' Tully
Known far and wide as ''The Blackfish,'' Brynden is a famous knight and the uncle of Catelyn Stark. He quarreled bitterly with his brother, Lord Hoster Tully, and the two were estranged for many years.
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Nathalie Emannuel as Missandei
Originally from the peaceful island of Naath, Missandei was sold into slavery as a child, along with her brother. She received education in various languages and became a translator to the slave trader Kraznys in Astapor.
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Kerry Ingram as Shireen Baratheon
Shireen Baratheon is the only child of Stannis Baratheon. An avid reader, she escapes her lonely life through myths and stories — her books are her most treasured possessions.
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Paul Kaye as Thoros of Myr
A key member of the outlaw band known as the Brotherhood Without Banners, Thoros is a Red Priest, in service of the Lord of Light, and originally hails from the Free City of Myr, in Essos.
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Thomas Brodie-Sangster as Jojen Reed
A mysterious and enigmatic young man, Jojen becomes an important ally to Bran Stark.
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Ellie Kendrick as Meera Reed
The eldest daughter of Howland Reed and a staunch Stark loyalist, Meera and her younger brother Jojen seek out Bran Stark to protect him on his hard journey north.
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Richard Dormer as Beric Dondarrion
Once the lord of Blackhaven and a celebrated warrior, Lord Beric has now become the leader of the Brotherhood Without Banners, a band of vigilante outlaws.
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Kristofer Hivju as Tormund Giantsbane
A famed wildling warrior and chief lieutenant of the ''King Beyond the Wall,'' Mance Rayder, Tormund is fearsome and strong, with a large build and a beard to match.
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Philip McGinley as Anguy
An extremely skilled archer, Anguy is a key member of the outlaw band known as the Brotherhood Without Banners.
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Tara Fitzgerald as Selyse Baratheon
The wife of Stannis Baratheon, Selyse spends much of her life in seclusion, shut away in a gloomy tower.
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Tobias Menzies as Edmure Tully
The younger brother of Catelyn Stark, Edmure has recently become Lord of Riverrun in the wake of his father's death.
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Anton Lesser as Qyburn
Qyburn, a former maester of the Citadel, was stripped of his chain many years ago.
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Ed Skrein as Daario Naharis
Naharis is the charming and brutal captain of a mercenary company of soldiers called the Stormcrows. Daario meets Daenerys Targaryen in season three.
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Jacob Anderson as Grey Worm
Grey Worm leads a group of eunuch slave soldiers called the Unsullied.