22. Syrio Forel

The Braavosi dancing instructor made quite an impression on Arya and on audiences. Although it's very likely that he's dead, there's still some hopefuls out there who believe that there's no way a knight like Meryn Trant could've killed the skilled fighter, even if his only weapon was a wooden sword.

Time of death: Season 1, episode 8, "The Prince of Winterfell"

Cause of death: Probably killed by Meryn Trant and his men in King's Landing.

Sadness ranking: 7. He was a charming, chill guy who helped make Arya the person she is now. He also saved her from being captured by the Lannisters. His death made us sad, but made Arya so mad that she brutally murdered Maryn Trant at a brothel in Braavos in a violent an act of revenge.