Gabriel
With the exception of Claire, meaning this version of Claire, and the Mohinder Suresh of my timeline, I'm the only person that I know of who has survived an encounter with Sylar. After the When Hiro and I met up again, we did our homework. New York was devestated, records were hard to find, but we gathered up as much information as we could find on him. Sylar. Gabriel Gray. A watchmaker from Queens, New York. Mother, Virginia. Father... some old police reports. Domestic disturbence, mostly. Never assault or battery.
I know the differences between you and him. I know the similarities.