Heya!
So let's began, first Seventh years:
Emily Night - She is quite mean and unfriendly person. She doesn't trust people very easily, so it's hard to become her friend. If she is your friend then she can be nice and friendly sometimes. She is one of the slytherin girls.
Mason Cuffe - She mostly like Emily. So far he trust only his sister fully, most people don't know it. He is actually quite smary guy but doesn't show it out. He is slytherin.
Clara Cadwallader - She is opposite to Emily and Mason. She is in gryffindor house too. She is very friendly and nice girl. She likes to help other people. She may trust people way to easy and she ends up hurting herself when she trust wrong person. She also cares about people feeling very much. She is brave girl, she only scares to lose some close to her.
Now to fifth year:
Cecilie Montez - She is friendly like is Clara and helpful as her. Gryffindor once again. But yeah she doesn't show her emotions/feelings out very easily. She herself even don't know why it is like that. If you know her then you can trust her always she is very loyal to his friends but Cece now anymore doesn't trust people anymore that easily.
Fourth Year:
Christine Ackerley - She is my hufflepuff. he is very friendly and kind if she wants to talk with you. Of course she can be mean too if you are or piss her off very badly. Quite smart also too, likes to learn new things everyday. Actually she is intelligent too more than just smart girl. She is sincere too also. She is very trustful girl, you can trust to her secrets, she won't tell anyone. She is very helpful even if she may be bad at giving advice. But she has a big heart and would help you with anything. You can see her being stubborn too but that's won't happen quite often, mostly then when she truly needs it or so.
Second year (I guess to young for him):
Tiffany Cruz - My only ravenclaw. She is always friendly and kind with others, even if she has get hurt from her previous friends. She can be mean too sometimes if you are mean with her or you just annoy her to much too long time. She is also very loyal to her friends, she never tells anyone secrets out, even yeah her friends did it at the end.. She is also very smart and brave little girl. She also very patient with others people, she can wait them for a long time if needed.
That's all charries what i have in Hogwarts. And they all need everything for sure. Friends, enemies and so on.