Thea Queen

"Ollie, I love you, but you can't come back here and judge me, especially for being just like you."

- Thea to Oliver Queen

Thea Queen (born January 21, 1995) is the sister of Oliver Queen, and daughter of Moira and the late Robert Queen.

History
Thea (it is insinuated) idolized Oliver as a child. They used to be close and, according to Oliver, she used to chase after him when she was younger; thus her given nickname, "Speedy." When her father and brother were both presumed dead, Thea felt alone — disconnected from the world. She fell into a life of drugs and partying to fill the void left by her father and brother. Oliver's reappearance has done little to fill that void, as he is hardly ever around to re-connect with his sister. After a string of "disappearances" and a murder charge, Thea herself is starting to wonder where exactly Oliver "disappears" to.

Season 1
In "Lone Gunman", Thea is brought home by the police after a night of drunken partying, leading to breaking and entering a store owner's shop. Despite being grounded, she parties at nightclub the Poison, where she bumps into Oliver and the two have an argument. Thea discloses to Oliver that Laurel and Tommy have been sleeping together in his absence and stumbles off. Thea tones down her wild behaviour towards the end of the episode, having a mother-daughter moment with Moira, and appearing at the Unidac auction to make her happy. In "An Innocent Man", Thea bonds with Oliver while they discuss Laurel and how Oliver can get back into her "good-books" again. In "Damaged", Thea and her family are worried for Oliver after multiple charges are brought against him by Detective Lance. Thea shows how much her brother's absence has affected her when she tells Oliver during conversation that "she can't lose him again." Oliver does his best to reassure her that she won't.

Trivia

 * In "Pilot," Oliver uses her apparent old nickname, "Speedy", a reference to Green Arrow's sidekick in the comics who also happened to have a drug problem.
 * The character "Thea" is not specifically found in the comic books. She is however based on a composite of Roy Harper and Mia Dearden; characters from the comic books who both take on the identity of Speedy.
 * An archery trophy can be seen in her room in the "Pilot."
 * Andrew Kreisberg posted an image of Thea's hospital bracelet in an upcoming episode of Arrow on Twitter. The bracelet states her birthday as "21-01-1995", thus January 21, 1995.