I am very fair-skinned, with long, straight, dark brown hair and chocolate brown eyes. My face is heart-shaped—a wide forehead with a widow's peak, large, wide-spaced eyes, prominent cheekbones, and then a thin nose and a narrow jaw with a pointed chin. My lips are a little out of proportion, a bit too full for my jaw line. My eyebrows are darker than my hair and more straight than they are arched. I am five foot four inches tall, slender but not at all muscular, and weighs about 115 pounds. I am a seventeen-year-old girl named Bella Swan, who moved from my mother's home in Phoenix, Arizona, to live with my father in my birth town of Forks, Washington. There, I becomes intrigued by a student, Edward Cullen. Edward saves my life on multiple occasions, exhibiting super-human qualities. I learn from family friend Jacob Black that legends say the Cullen family are vampires. Edward eventually admits to this truth, though his family hunts only animals, not humans, through moralistic choice. Edward constantly warns me against being with him, perceiving my life to be at risk if I continue to associate with him because the scent of my blood is so much more powerful to him than that of any other human. My love and confidence in Edward's restraint is such that his warnings go unheeded, and on an outing with the Cullens I become the target of a sadistic vampire, James. With his family's help, Edward is able to save me from James' predations, but Edward is still unwilling to change me into a vampire himself.
I was upset by my eighteenth birthday because it will make me "older" than the permanently seventeen-year-old Edward. During my birthday party I get a paper cut, and Edward's brother Jasper instinctively hungers for my blood, reminding Edward that our relationship puts me in danger. In a misguided attempt to protect me, he convinces me that he no longer loves me and moves away with his family, leaving me heartbroken and depressed.
To appease my worried father, I go to a movie with my friend Jessica. While there, I carelessly approach a group of men outside a bar and find that I can hear Edward's voice when in dangerous situations. Desperate to hear his voice again, I seeks out danger; I ask Jacob Black to repair two motorcycles and teach me to ride one. Our friendship grows to be very strong, and Jacob admits that he has romantic feelings for me, though I does not reciprocate this. When a vampire named Laurent decides to attack me, I am saved by a pack of giant wolves. Later, I learn that Jacob and others from his tribe are werewolves, and that the vampire Victoria seeks to kill me to avenge James' death.
To hear Edward's voice, I attempt cliff-diving and I nearly drowned, but I was saved by Jacob. Edward, after being mistakenly informed by Rosalie that I have committed suicide, travels to Volterra, Italy, to ask the Volturi to destroy him. Alice returns to Forks, and we pursue and successfully stop Edward. We speak to the Volturi and promise them that I will turned into a vampire eventually. Because most humans are unaware that vampires exist, Volturi threatens to kill me if this promise is broken. Upon returning home, Edward tells me that he never stopped loving me and reveals that he only left Forks because he thought it would be for my own good. He apologizes for this misguided action and asks for my forgiveness, which I quickly grants. I, intent on becoming a vampire, decides that Edward's family should vote on my fate. All but Rosalie and Edward vote affirmatively for me to be changed, but Edward agrees to change me himself if I will marry him first.
Edward explains that he is reluctant to change me into a vampire because he believes that vampires are soulless creatures who have no place in heaven. Me, whose opinion of marriage is jaded by my own parents' early divorce, agrees to marry Edward on the condition that he will make love with me while I am still human and then turn me into a vampire. He initially refuses, saying that he could easily lose control in the heat of the moment and unintentionally kill me. However, seeing how important it is to me, he agrees to try, but only after we are married.
Victoria, seeking revenge for her mate, James' death, is hunting me and building an army of new vampires. To combat this threat, a grudging truce is made between the Cullens and the Native American werewolf pack led by Sam Uley and Jacob Black, who pits himself against Edward as a love interest for me. Initially I see him only as a friend but, despite my engagement to Edward, I share a kiss with Jacob and realizes that I love him as well. Ultimately, Edward accepts my love for Jacob and successfully destroys Victoria, and I acknowledge that Edward is the most important person in my life, agreeing to tell my father of our engagement.
I married Edward in a wedding orchestrated by Alice. We spend our honeymoon on Isle Esme, a small island that was given to Esme as a gift from Carlisle. We consummate our marriage, but our lovemaking sparks a conflict between us: Edward is horrified that he has bruised me, but I insisted that was I was fine and I wanted Edward to make love to me again. He vows not to do so again while I was still human, but he eventually gives in. Soon afterwards, I become very sick and realizes that I was pregnant.
Edward is shocked and rushes me home to see Carlisle, who, as a doctor, confirms that I am expecting Edward's child. Edward goes half-crazy with worry as the rapidly growing fetus begins to drain my health, and he tries to coerce me into having an abortion to save my own life. However, I felt a bond with my unborn child and insists on giving birth. Soon Edward comes to love our baby as well, after he hears its thoughts and learns that the baby loves me in return and doesn't mean to hurt me at all.
I nearly died giving birth, but Edward successfully delivered our baby girl and then injects my heart with his venom, thus healing my wounds by turning me into a vampire. During my painful transformation, Jacob imprints —an involuntary process in which a werewolf finds his soul mate— on our baby, Renesmee.
After a vampire named Irina mistakes Renesmee for an immortal vampire child (a creation that is forbidden in the vampire world), the Volturi arrive to destroy us as punishment for the alleged transgression. Edward stands with me and their allies to convince the Volturi that Renesmee is not an immortal child and poses no threat to their existence. Once the Volturi leave, Edward and I are finally free to live our lives in peace with their daughter.
I am described as an understanding, caring, serious, shy, and intelligent person, with a very dry sense of humor, and I'm noted for being very clumsy, and also stubborn. I have a very private mind, which is thought to be why Edward is unable to see my thoughts, and I am determined to become a vampire. I am also terrible at lying, but occasionally demonstrates good acting ability. I become faint at the smell of blood, though this does not bother me once I became a vampire. After being turned into a vampire, I have a more clear view of the world. I am also very self-controlled, being able to run away from the scent of human blood on my first hunting trip. My private mind that rejected some vampires' special abilities while I was human evolved after I became a vampire; my ability formed into allowing me to shield those around me from the mental powers of some other vampires. I am described by Edward as "very graceful", even for a vampire, in comparison to my earlier clumsiness.