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

Oliver, sometimes the greatest act of love is no action at all. It's her life. It's her choice.

Malcolm

Oliver: Over watch, we're on sight.
Felicity: Excuse me?
Oliver: Well, I thought it was time you got a code name. What do you think?
Felicity: It's perfect.
Oliver: I was gonna go with Oracle, but it's taken.