Rachel's personality evolved somewhat over the series. Early on, the focus was on her as a spoiled daddy's girl stereotype, although later in the series, especially after having her baby, Rachel became less self-absorbed. However, she was still the friend most focused on image and very selfish.
Rachel's catchphrase or famous line is "Noooooooo!" which is used mostly in the later series. However, in one Season 5 episode, Rachel and Monica are playing back a message left by Ross' ex-wife Emily at his apartment, where Monica says "Noooooo!" to which Rachel responds with Monica's line "I know!"
History
Rachel made an unforeseen entrance to the coffee house, after running away from her wedding. Since that, she had lived with Monica and became much more independent. She was looking for love in all the wrong places, firstly with Barry and then Paolo, when all along Ross was right in front of her. Her relationship with Ross was very uneven, and could no longer prevail. She has had much more success career-wise, as she originally started as a waitress at central perk, and then progressed onto a fashion career at Bloomingdale and then Ralph Lauren's. She had a drunken night with Ross, which turned out to be a marriage, since then she hasn't had many serious relationships. The greatest day of her life was undeniably, the day she gave birth to Emma. She's currently living with Ross, and their Child Emma.
