Jacob Black is of the Quileute Tribe of Native Americans in La Push, Washington. His father is Billy Black. His tribe is descended from wolves, and whenever there are vampires around their land, the younger men of the Quileute tribe begin phasing into very large wolves to defend their land and their people. Jacob feels strongly for Bella Swan, who is dating one of the friendly vampires that live near the Quileute reservation. He believes he's in love with her, and fights for her and protects her without end, but as he finds out (in the last book of the saga) he is meant to "imprint" (something that happens to the men who turn into wolves in that tribe: they fall hopelessly in love with one person only, no matter the age. If that person is young, then the man cares for her, basically being her guardian until she is of dating age, when they then become soul mates) on Bella and Edward's child, Renesmee.
