There wasn't anyone on the school grounds that Sirius didn't know, and after James, he was the most famous...
Compared to the other two, Remus was reserved, but he had a nice personality and was popular. He was nice even to me...he was kind-hearted.
My happiness only lasted for the first one or two years.

Snape: Hey, Peter.

He was a Slytherin named Snape. He hated everything about James with a passion (and James too, but..).

Peter: Wh-what?