- Bella Swan: The main character and protagonist of the book and film series. She is a teenage girl who moves to the town of Forks, Washington, and falls in love with a vampire, Edward Cullen.
- Edward Cullen: A vampire who falls in love with Bella. He is the oldest son of Carlisle and Esme Cullen and the brother of Emmett, Rosalie, and Alice Cullen.
- Jacob Black: A shapeshifter who is a member of the Quileute tribe. He is Bella's best friend.
- Carlisle Cullen: A vampire and the adoptive father of Edward, Emmett, Rosalie, and Alice Cullen. He is a doctor.
- Esme Cullen: A vampire and the adoptive mother of Edward, Emmett, Rosalie, and Alice Cullen. She is a kind and compassionate woman.
- Emmett Cullen: A vampire and the adoptive son of Carlisle and Esme Cullen. He is a strong and muscular vampire.
- Rosalie Hale: A vampire and the adoptive daughter of Carlisle and Esme Cullen. She is a beautiful woman and is very self-conscious about her beauty.
- Alice Cullen: A vampire and the adoptive daughter of Carlisle and Esme Cullen. She is a small and pixie-like vampire and is able to foresee the future.
- Jasper Hale: A vampire and the adoptive son of Carlisle and Esme Cullen. He is a very emotional and sensitive vampire.