Renesmee Carlie Cullen (pronounced Ruh-NEZ-may) (born on September 10, 2006), conceived and carried by Bella Swan, is a half vampire/half human hybrid, and a member of the Olympic Coven. She is the imprintee of Jacob Black, and the daughter of Edward and Bella Cullen. Renesmee's paternal grandparents are Edward and Elizabeth Masen. She is the granddaughter of Charlie Swan and Renee Dwyer, as well as the adoptive granddaughter of Carlisle and Esme Cullen. She is also the niece of Jasper and Rosalie Hale and Alice and Emmett Cullen.
Renesmee is considered to be Edward and Bella's "miracle", because of what it took to keep her and her mother alive through the pregnancy. Renesmee also has the special power to show people what she is thinking by touching them.
In the beginning, Bella despises Jacob for giving her daughter the nickname "Nessie". After Jacob Black imprints on Renesmee, Irina, a vampire from the Denali Coven, sees Renesmee and believes she is an "immortal child", a human child who had been bitten by a vampire. She informs the Volturi, as immortal children are not permitted to live. Intent on killing Renesmee and all the Cullens, the Volturi travel to Forks. However, the Cullen family members gather witnesses from around the world to prove that Renesmee is not an immortal child. Alice brings another half-breed, Nahuel, who explains that half-breeds pose no danger to the vampires. Convinced that Renesmee is not a threat, the Volturi leave, and Renesmee and her family are left in peace.