Brian (and or ''The Fandoms Favorite White Boy'' ) is a friend of Alex Kraile, and also plays the main character of Marble Hornets, Brian.
Being a close friend of Alex Kralie, Brian played the main character of Marble Hornets, Brian, as he attempts to adapt to his changed home town that he missed while in college. It's clear that he and Alex are good friends. However, it is also stated he and Tim were also at a point friends. According to Totheark, Brian is an advocate, someone who stands on another person's behalf. In this case, it was Alex.
Brian is dead. Accept that he's dead-
Not like we’ll ever accept that-
Forever in our hearts. We love you Brian
It was revealed in Entry #84 by Tim that Brian was wearing the same hoodie as the Hooded Man wears. In entry #86, Brian is shown slung against the wall, wearing the same beige-yellow hoodie.