A member of the wolf pack, Quil Ateara is mentioned in passing in the first of the series, but becomes somewhat of a regular character starting in the second book. Unlike the other members of the pack, he was happy about becoming a wolf, due to finally having his friends back and understanding what was going on.
In New Moon, Quil is worried about the effect that being a wolf has had on Jacob. It is revealed during Breaking Dawn that he enjoys being part of the pack the most. Quil was one of the first three wolves of the pack to imprint, the others being Sam and Jared; Quil imprinted on Emily's two-year-old niece, Claire. Although this seems scandalous, Jacob Black explains that there is currently nothing sexual or romantic about their relationship, and that Quil will be whatever Claire needs him to be for the rest of her life, whether a brother, a protector or a lover. He ends up joining Jacob's pack at the end of Breaking Dawn.