Rachel Green is Monica's best friend from high school and therefore a key member of the group of Friends. Rachel stars off as a waitress at the Central Perk where the gang hangs out, but later becomes a buyer at Bloomingdale's.
Rachel dates Ross on and off throughout the series and the two eventually have a baby girl, Emma, at the end of season eight.
Ross: Rach, you know, I can see you naked anytime I want.
Ross: All I have to do is close my eyes. See? (Ross closes his eyes) Woo-hoo!
Rachel: Ross, stop that!
Ross: I'm sorry.
Rachel: Come on! I don't want you thinking of me like that anymore.
Ross: Uh, sorry. Nothing you can do about it. It's one of my, uh, rights as the ex-boyfriend. (Ross closes his eyes again) Oh yeah!
Rachel: Stop it! Cut it out! Cut it out!
Ross: Okay, okay. I'm sorry. It will never happen-- (Closes eyes again) Uh oh. Wait a minute! Wait, wait. Now there are a hundred of you, and I'm the king!
Chandler: Just had me a little nubbinectomy. Yep! Two nipples, no waiting.
Monica: Wow. Just like Rachel in High School.
Monica: Come on! Come on, I was kidding! It was such an obvious joke!
Chandler: That was an obvious joke; and I didn't think of it. Why didn't I think of it? The source of all my powers! Oh dear God, what have I done!