How is the narrator described in the novel, Winter in the Blood?

The unnamed narrator is described as a thirty-two-year-old Blackfeet Indian who lives on a ranch with his mother Teresa and her husband Lame Bull. He lives an aimless, unfulfilling life, hanging around the bars in the small towns that border the reservation, getting drunk, picking up women, and getting into fights. The great tragedy in his life was the loss of his brother Mose when the narrator was twelve and Mose was fourteen. In the accident that killed Mose, the narrator smashed his knee, which has never fully recovered. Even though he is intelligent and capable, the narrator has never had much of a career. He worked in a rehabilitation clinic in Tacoma, Washington, for two years, although his mother claims that he was there for much less than that. Then, he spent most of his time in bars in Seattle. Although, during the course of the novel the narrator does nothing of note, he does gain some dignity and self-respect when he discovers that he is the grandson of Yellow Calf, not the half-breed Doagie.