'Game of Thrones' is HBO's hit fantasy series based on the acclaimed novels by George R.R. Martin. Set in the fictional, medieval world of Westeros, 'Game of Thrones' sees rival houses fighting against each other (and against their own family members) for the Iron Throne. Among the series' vast arsenal of characters are the Starks, based in the frigid North; the Lannisters, who's sadistic Joffrey currently resides as King of Westeros; and the Targaryens, who's Daenerys is among the last of her family and is plotting a return to Westeros to smite her enemies with dragons after she was forced to flee as a child when a rebellion usurped her ruling family.