HBO announced a number of cast additions for Game of Thrones Season 5 during the show's Comic-Con panel this afternoon, introducing each newcomer in video form.

Jonathan Pryce (the Pirates of the Caribbean films) will portray High Sparrow, a religious leader with a very large following of the poor and sick.

This is a man of the people who despises corruption.

Game of Thrones Cast Introductions

Alexander Siddig (Star Trek: Deep Space Nine, Da Vinci’s Demons) will portray Doran Martell, the surprisingly calm lord of Dorne and older sibling of the late Oberyn Martell.

The HBO epic has also cast a trio of of Oberyn’s bastard daughters (aka the Sand Snakes.

Relative newcomer Rosabell Laurenti Sellers will take on Tyene Sand; Keisha Castle-Hughes (Whale Rider) will play Obara Sand; and British actress Jessica Henwick will be Nym Sand.

Also cast:

• Toby Sebastian as Doran’s son Trystane Martell, who is betrothed to Cersei’s daughter, Myrcella.
• DeObia Oparei (Pirates of the Caribbean: On Stranger Tides) will play Doran’s palace guard captain, Areo Hotah.
• Enzo Cilenti (Rome) as a former slave trader who crosses paths with Daenerys.

Game of Thrones Season 5 will air in the spring of 2015.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.