is he your superior? that is the only thing that would require you to talk to your manager. depending on the firm culture and your ego i'd consider this: you are the new one. there are minds to make up abput you. if you go and tell them about the situation, your are the one ratting others out and playing right into his hands (by ratting him out you show yourself not being a team player and - depending on management views - maybe even high maintenance). if he talks about you, he is probably already known to make quick assumptions and not shut up about those. by not telling on him, on the other hand, you show that you provide value independent of others and are not easily influenced.

try to talk to the others (carefully) why he acts that way and how they deal with it. it is normal to ask questions. you are the new joiner and just want to get to know the firm culture.

sorry for typos (typed on phone)