Sylar, whose real name is Gabriel Gray, always wanted to be recognized as something special, but had resigned himself to life as a watchmaker. That is, until Dr. Suresh came into the picture. When Sylar showed no signs of special abilities, he was ditched by Suresh, but started his own mission searching for others with powers.
He quickly realized that if he killed people with special abilities, he inherited the powers, and quickly Sylar has found the recognition and self-worth he has been craving his whole life.
Quickly becoming a serial killer, Sylar is chased by the FBI, Dr Suresh's son Mohinder, and another unnamed agency that has long been tracing people with special abilities.