White Fang is the book's main character. He is three-quarters wolf and one-quarter dog. He is born wild but becomes more dog-like after Grey Beaver domesticates him. He grows up fierce and unloved, constantly bullied by other dogs, and becomes a fighting dog after Beauty Smith buys him. He eventually becomes more loving and friendly after he is bought and tamed by Weedon Scott. He saves Judge Scott’s life by killing Jim Hall and eventually has six pups with Collie.
Weedon Scott is White Fang's third master and the first to show affection towards him. He saves White Fang from the bulldog and forcefully buys him from Beauty Smith. He tries to tame White Fang and slowly gains his trust, then finally his love. He takes White Fang to live with him in California.
Grey Beaver is White Fang's first master. He is harsh and shows no affection for his dog, but White Fang still displays loyalty toward him out of respect for his superiority. Grey Beaver only sells White Fang after becoming addicted to alcohol.
Kiche is White Fang's mother; she is known as the "she-wolf" at the beginning of the novel. She is half wolf, half dog and used to be Grey Beaver’s brother’s dog, but escaped during a famine. When she returns to the Native Americans, she gets sent away from White Fang and only sees him once more in the novel, where she chases him off to protect her new pups.
Lip-lip is a canine pup who also lives in the Native American village. He brutally bullies White Fang throughout his puppyhood and turns all the other dogs against him. White Fang kills him after he flees into the woods during a famine.
Beauty Smith is White Fang's second master. He is an ugly man who gets Grey Beaver addicted to alcohol so that he can buy White Fang. He trains White Fang to become a fighting dog. He tries to steal White Fang back after Scott forcefully buys him, but White Fang brutally attacks him.
One Eye is White Fang's father. He is full wolf and kills his rivals to mate with Kiche. He is killed by a lynx when he tries to rob its den for food during a famine.
Jim Hall is a criminal who escapes from prison after Judge Scott unjustly sentences him. He attempts to murder Judge Scott, but White Fang attacks and kills him.
Judge Scott is Weedon Scott's father. He does not trust White Fang completely until he saves his life from Jim Hall.
Collie is a sheepdog on Scott’s farm. She does not trust White Fang at first, but he works his way into her confidence, and they become mates.
Henry is a musher who appears in the first part of the novel with Bill. He is the only one who escapes being eaten by the wolves.
Bill is a musher who appears in the first part of the novel with Henry. The wolves eat him when he attempts to go after the pack with a gun.
Mit-sah is Grey Beaver's son. He runs White Fang and the other dogs on a sled.
Matt is Scott's musher. He feeds White Fang and works him on the sled during the day.
