Ah, the Onion Knight.
Game of Thrones Season 7, Episode 3
Are you afraid, Onion Knight?
Game of Thrones Season 2, Episode 4
Some highborn fools call you Onion Knight
and think they insult you.
Game of Thrones Season 2, Episode 8
Onion Knight. Ser Onion Knight.
Game of Thrones Season 3, Episode 5
If half an ONION is black with rot,
it's a rotten ONION.
Game of Thrones Season 2, Episode 4