a teaching/research 'fellow' [=a graduate student who gets money in exchange for teaching/research]
He attended the concert with a 'fellow' student. [=someone who is a student, as he is]
He has always tried to be of service to 'his fellow man'. [=to other people]
(..) Look, Gru, the point is, there are a lot of new villains out there, younger than you, hungrier than you, younger than you. Like that young fellow out there named Vector. He just stole a pyramid! I've got it. I've got it. So, as far as getting money for the rocket... (..)2010 Despicable Me