Tons of new photos have surfaced of the most anticipated new characters of "Game of Thrones" season 4, Oberyn Martell, also known as the Red Viper of Dorne, and Ellaria Sand, WinterIsComing.net reports.

Yesterday, a large gallery of pictures from filming at the Hotel Belvedere in Dubrovnik, Croatia emerged online, giving viewers their first glimpse of Pedro Pascal as the Red Viper decked out in armor and Indira Varma as Ellaria Sand, the prince's companion, wearing a full-length orange dress. The photos, which were taken back in September, also show an up-close glimpse of the flag of House Martell, which was "first spotted a few months back in distant photos," according to WinterIsComing.net.

Also seen in the new photos are Hafthor Bjornsson as Gregor Clegane filming alongside Pascal, if you've read the "A Song of Ice and Fire" series, you know what these pictures indicate.

For those who haven't read the books, the importance of the Martells has yet to be revealed, as they have only briefly been mentioned throughout the first three seasons. If you recall, Tyrion Lannister struck a marriage alliance with House Martell in season 2, arranging for Princess Myrcella to leave for Dorne and eventually marry Trystane Martell in order to ensure her safety during the war while hopefully gaining soldiers from the Martells for the Battle of the Blackwater.

Click here to see photos from filming in Crotatia of Oberyn Martell the Red Viper, Ellaria Sand and Gregor Clegane, and click here for more photos from the set.