In 'Game of Thrones', which character is known as "The Kingslayer"?

In 'Mad Men', what is Don Draper's real name? In 'Game of Thrones', what is the name of Arya Stark's sword? In 'Game of Thrones', what is the name of Jon Snow's direwolf? In 'Game of Thrones', how many dragons does Daenerys hatch? In 'Game of Thrones', what is the capital city of the Seven Kingdoms? In 'Game of Thrones', what is the Stark family's ancestral home? In 'Game of Thrones', which infamous wedding kills Robb Stark? In 'Stranger Things', what is the name of the mall in Season 3?