It's a good job Game of Thrones kills off so many of its characters, otherwise Westeros would become confusingly crowded.

For season five, there is, of course, the usual batch of new faces, nine of which were introduced at San Diego Comic Con over the weekend, and seem to be mostly draw from book four A Feast For Crows. To give you an idea of what to expect when the show airs next year, here's a quick guide to the new players in the most dangerous game of all.

Who will win, and who will die?

Warning: Includes spoilers for series 4 and, obviously, information about characters from series 5. 

Obara Sand (Keisha Castle-Hughes) 

Next season we'll finally be going to Dorne. After the rather eye-popping death of Prince Oberyn Martell at the end of series four, expect series five to feature a heck of a lot of his illegitimate Dornish daughters ready to wreak their vengeance. As quite a popular guy, Prince Oberyn ended up with so many of these, they even come with their own nickname: the Sand Snakes. The first, and the eldest, of the Snakes to be announced is Obera Sand, and she's not a happy bunny. 

Obera is known to be rather ill-tempered (perhaps understandably so), a dab hand with her chosen weapon, “the spear of tears” and to ride her horses until they're bloody. We'll get on the phone to the RSPCA, the rest of you hide any sharp or pointy objects.

You might recognise Keisha Castle-Hughes from... The Whale Rider, or Star Wars Episode III : Revenge of the Sith.

Nymeria Sand (Jessica Henwick) 

Then there's Nymeria Sand, the second-eldest of the Sand Snakes. As the daughter of a mysterious noblewoman, Nymeria is known in the books as being far more beautiful and graceful than her menacing brood of half-sisters, but certainly not any less deadly. 

You might recognise Jessica Henwick from Spirit Warriors, The Thick of It, and Silk. 

Tyene Sand (Rosabell Laurenti Sellers)

Finally, we have Tyene Sand, the youngest of the Sand Snakes. Her mother is thought to have an otherworldly religious background, and read passages from the Faith of the Seven (the main religion in Game of Thrones) to her as a baby.

Now all grown up, Tyene also wants catharsis for her dad's untimely death. With a keen knowledge of poisons, like her old pa, Tyene will certainly be injecting some venom into the show's proceedings. 

Doran Martell (Alexander Siddig) 

Now, here's a big character. You've heard the name but are yet to see the face; say hello to Doran Martell, brother of Prince Oberyn, head of the house Martell and the Prince of Dorne, a part of Westeros we will be seeing a lot more of in series five.

Doran is a stoic, no-nonsense leader, despite the brutal deaths of half his family – so fair play to him. With Tywin Lannister on the longest privvy trip of his life, we can expect Doran Martell to be the next big figure of authority in Thrones. 

You might recognise Alexander Siddig from Star Trek, 24 and Syriana.

Areo Hotah (DeObia Operai)

Following on from Doran Martell, we will also meet his ever-loyal bodyguard Areo Hotah, the leader of the Prince's army of valiant guards. At the age of 16, Hotah had an axe branded on his chest to signify his success in warrior training, and as he grew up in Dorne, lives by the rather simple mantra: “Serve, Obey, Protect.” 

You might recognise DeObia Operai from Moulin Rouge!, Dredd, and Pirates of the Caribbean: On Stranger Tides.

Trystane Martell (Toby Sebastian) 

In the show, we have only heard of Trystane Martell by reputation; he is both the youngest son of Doran Martell, and heir to the throne of Dorne. Interestingly, he is set to marry Myrcella Baratheon, otherwise known as Cersei's youngest and only daughter who Tyrion pawned off to the Martells quite early on; something Cersei's never exactly been chuffed about.  

You might recognise Toby Sebastian from, er, a house party, perhaps. This is the young actor and musician's first big acting role, but we're sure you'll be seeing a lot more of him from now on.

Myrcella Lannister (Nell Tiger Free) 

Following on from the casting of Trystane is his betrothed, Myrcella Baratheon, otherwise known as Cersei and Robert Baratheon (and definitely not Jaime Lannister's) only daughter. Described by Tyrion Lannister as having, “all of her mother's beauty, but none of her nature,” Myrcella hasn't had a chance to shine in the show yet, after she was shipped off to Dorne rather early on to marry into the Tyrells. Now recast, and with a much bigger part, perhaps her exotic dwellings will make Myrcella one of the nicer Lannisters.

You might recognise Nell Tiger Free from David Walliams's Christmas drama Mr Stink. 

Yezzan zo Qaggos (Enzo Cilenti)

So far, the story of Daenerys Targaryen has been rather similar to the music video for Michael Jackson's Earth Song, as we've watched her crossing over lands and freeing slaves, left right and centre. The casting of Yezzan in series five, however, could cause a little trouble, considering his former profession as a very wealthy slave trader before Daenerys proved to be rather bad for business. In the books, he likes to collect odd looking workers to add to his unique 'collection'. We're sure the young Khaleesi and him are going to be great pals. 

You might recognise Enzo Cilenti from 24 Hour Party People, Rome, or most recently in Guardians of the Galaxy.

High Sparrow (Jonathan Pryce)

And last, but most certainly not least, is the very welcome addition of Jonathan Pryce as High Sparrow, the High Septon of the House of the Seven (so sort of like Westeros's Pope, if you will). High Sparrow will take pride of place in Kings Landing, at the request of Cersei. After the amount of horrific slaughterings the residents suffered in series five, we're sure Kings Landing could do with one of Gods' best mates right about now.

You may recognise Jonathan Pryce from Brazil, Pirates of the Caribbean, James Bond and absolutely everything ever made.

Watch the full video introducing the cast below.