Alright, here we go!

@"Acacia Ruskin" would be there to help him through the judgmental purist views, if he needs a kind face. She is MCHB - Half-Vampire.
Claire Bénet is in his year, and very much enjoys adventure. Perhaps she asks him to join her on one of her adventures? UCPB, not purist.
Jeremiah Tatting is his Head of House, and a fellow Working Class man. Jeremy could take Adrien under his wing and be all like "you can get through your school years!". WCHB.