Alicia- Wishes he'd be friendlier, but she wishes that of most of the students! Only knows him through her current job.
Blaise- Despises most people for his own personal reasons, but a good half of Slytherins thinks they are friends with him. As a former Head Boy
Ernie- Sees him as another one of those stuck-up typical pureblood kids.
Jason- Hates.
Riza- They are the same year and prefects together. IDK I she doesn't really outwardly hate but I'm sure he got special privileges last year as a prefect/pureblood/Slytherin so there is probably some contempt.