Seth Peterson: "You are so beautiful, it should be considered unfair."
Margaery Tyrell: "I know."
— Seth Peterson and Margaery Tyrell.

Queen Margaery Tyrell is a major character in the second, third, fourth, fifth, and sixth seasons. She is played by Natalie Dormer and debuts in "What is Dead May Never Die". Margaery was the only daughter of Lord Mace Tyrell and Lady Alerie Tyrell, granddaughter of Lady Olenna Tyrell and sister of Loras Tyrell. Margaery became Queen through her marriage to the sadistic King Joffrey Baratheon, and later his younger brother Tommen Baratheon.