Jacob Black

Jacob Black is a La Push shape-shifter or "werewolf", second in command of Sam Uley's Pack, and later Alpha of his own. He is a Quileute Native American. He phases into a wolf for the first time at the age of sixteen. The first time he met Skye he imprinted on her.

Early Life
Jacob Black was born to Billy and Sarah Black. Unfortunately, his mother, Sarah died in a tragic car crash when he was nine years old, although Jacob never speaks of it. He has two older sisters, Rachel and Rebecca Black. Rebecca moved to Hawaii and eventually married and Rachel who has been off at college.

Becoming a Shape-shifter
Jacob goes through his transformation around the age of 16. After Jacob goes through a sudden transformation into a werewolf, it is revealed to him that Sam, the pack's leader, was the first to make the transformation in several generations. He'd gone though his own hardships during the change, including a rather bloody incident with his fiancée, Emily Young. As werewolves are short-tempered, highly violent, and likely to explode into wolf form when angered.