Alfie Allen (Theon Greyjoy)
Theon Greyjoy, who was tortured throughout the third season, is actually the brother of Lily Allen, the famous singer. Moreover, in real life, he was married to the daughter of actor, Ray Winstone. They were engaged back in 2008 but broke up in 2010. Recent news claims that they are planning to marry each other now.
Jason Momoa (Khal Drogo)
Khal Drogo has been in a relationship with Lisa Bonet since 2005. The two even got married in 2007. While auditioning for his role, he performed a dance which was acted out by the Maori people in the New Zealand.
Peter Dinklage (Tyrion Lannister)
Tyrion Laninster was actually a party of the hit comedy series, Seinfield. He is also a pro-vegetarian and is actually eating tofu during the scenes in which he is asked to eat meat.
Jack Gleeson (Joffrey Baratheon)
The gruesome villain throughout the first three seasons, Joffrey Baratheon, actually became famous through the movie Batman Begins. He starred as the boy from The Narrows. He recently also revealed that he is extremely afraid of heights and he found out about it while out on a trip with his family to Skellig Rock. Moreover, Jeoffrey also claims that he is taking inspiration of his role from the Joaquin Phoenix who starred in the movie, The Gladiator.
Kit Harington (Jon Snow)
Jon Snow was actually dating his co-star Rose Leslie (Ygritte), who he was also dating in the series. However, it did not work out between the two of them and they have already broken up.