Thea is Oliver's younger sister.

Thea Queen Quotes

Oliver: This guy gets more airtime on the Kardashians.
Thea: Five years on an island and you still know who they are.

Thea: I missed you so much.
Oliver: You were with me the whole time.

Arrow Quotes

Laurel: Helena, you don't have to do this.
Helena: Yes, I do. Because once you let the darkness inside, it never comes out.

There is a prophecy. The man who doesn't perish at the blade of Ra'a al Ghul will become Ra's al Ghul. Ra's al Ghul doesn't offer, he orders. Oliver! Don't delude yourself into thinking you have a choice.

Malcolm