1. Rachel Green: A spoiled, ditzy, wealthy young woman from Long Island. She moves in with Monica after breaking off her engagement.
2. Monica Geller: Rachel's best friend and a neurotic, organized chef. She lives with her brother, Ross, but lets Rachel move in after Rachel's fiancé leaves her.
3. Ross Geller: Monica's brother and a nerdy, know-it-all paleontologist. He has been in love with Rachel since high school, but she never felt the same way about him until season 2.
4. Chandler Bing: Joey's best friend and an advertising executive known for his sarcastic sense of humor. He is initially afraid of commitment but eventually falls in love with Monica.
5. Joey Tribbiani: Chandler's best friend and an aspiring actor. He is known for his womanizing and cheerful, dimwitted personality.
6. Phoebe Buffay: A ditzy, eccentric masseuse and singer-songwriter. She is Monica and Rachel's neighbor.