One of the "old guys". He started his BS in CS in Fall 2001, joining the KGB in Spring 2003 after his roommate Levi convinced him to. He graduated in 2005, didn't leave Pittsburgh, came back to mathematics grad school in 2006, and graduated with a Doctorate of Arts in Spring 2011.
He has TAed and taught many courses, and quite a few KGB members have been part of one of his classes. (The others totally should've been...)