sentences:  Niki has a romantic relationship with Peter Petrelli, who has a distinct scar across his face which starts on the right side of his forehead down to his left cheek.Sylar is blamed for detonating a nuclear explosion that destroys half of New York and kills millions of people, and is assumed to be deceased.In the original timeline, Hiro had stabbed him before the explosion, but Sylar had already succeeded in killing Claire Bennet at her high school Homecoming, absorbed her regenerative powers, and survived.