Brady Fuller joined the Uley pack at the age of 13, making him one of the youngest known shapeshifters. On his grandmother's side, he is a distant relative to the Ateara and Clearwater families.
Due to their age and inexperience, he and Collin are ordered to remain behind to guard the tribe and La Push while the rest of the pack fight off the newborn vampire army. Like Collin, he only appears in wolf form.
Even after everything was resolved, Brady still remains with Sam, as one of the "pups" of the tribe.
Brady makes his first movie appearance in Breaking Dawn - Part 1, at First Beach with the rest of his pack and their imprinted lovers. He later appears in wolf form while spying on the Cullens' house. When Emmett, Carlisle and Esme run out to hunt, he and Collin chase them, only to lose them at the ravine and alert the others. He is also present when Sam goes to tell Billy that they may have to fight him to get to the baby and then erupt a fight with the Cullens until Jacob emerges to stop them.He takes part in the show of force against the Volturi near the end of Breaking Dawn, standing alongside the packs, the Cullens and their allies in defense against the Volturi's confrontation. In Alice's vision, he is seen destroying a Volturi guard with Collin's help, while Sam gets ready to kill Jane.
Brady is noted as having black hair and brown eyes, and being nearly 6 feet tall.
In the movie, his hair is dark brown, and he is shorter than Sam, Embry, Paul, Quil and Jared.
In wolf form, Brady has dark, ashy-brown fur that almost appears gray. In the films however, his fur is gray with brown spots on his forehead and sides.