Helloo!
I have loads of characters Altair can play with! I'll start with my Slytherins!
Kaiden Poliakoff - Seventh Year Slytherin. He's your typical pretty boy who cares about no one but himself. Well he was. Until he met a girl he likes and now he's almost completely changed into a caring guy. With this new marriage law, he might elope with her for a while to America or something so they don't have to marry anyone else.
Raine D'Eath - Sixth year Slytherin. Raine is a very cold.. icy girl. She is very attractive and has a lot of boys going after her, she is also rather flirty though she doesn't really try to be. She can also be rather mean to people because she keeps everyone at a distance.
Now, onto everyone else.
Nathan Finch-Fletchley. Sixth Year Hufflepuff. He's your average kid, except he's a Werewolf. And he's hyper. Too hyper. Nate is like an over excited puppy who loves to meet new people and make new friends. He's a very happy-go-lucky kid.
Dylan Davies. Sixth Year Ravenclaw. So, Dylan's life revolves around music. He used to have a band with his friends, but before the beginning of his fifth year they broke up. After that he continued to write music with his best friend Zandell who unfortunately ended up dying from a strange illness. Dylan has been a bit depressed ever since, but he doesn't show it much.
Olivia Jones. Sixth Year Ravenclaw. She's a Werewolf too. She's pretty much the complete opposite of Nathan. She's not exactly mean, but she's sarcastic and tends to keep guys at an icy distance from her. She's sort of afraid of them because her ex used her, got her pregnant and then just up and left. There are about four guys she will let come near her, one of which is Nathan. Although now she's a bit colder toward him because she believes he's the one who turned her into a Werewolf.
Caspian Ivanov. Sixth Year Ravenclaw. Cass is Nathan's best friend. And therefore as an extension, he is rather close to Olivia. He is human, though sometimes he wishes he was a Werewolf so he could help his friends more while they are transformed. He's a naive, loyal kid who loves to read and learn new things.
Lastly, I'll offer Hitame Higurashi. Fifth Year Gryffindor. Hitame has had a lot happen to her since she was a little girl, so she's rather distrusting of almost everyone. Her sister is currently missing and she is really vulnerable because of it. The girl has a tendency to get along with Slytherins and even has a few as friends, but most do still get under her skin.
So, I can see most of then being friends with Altair. Except maybe Nathan, Olivia and Hitame. Nathan might come on too strong and therefore be annoying to him. Olivia might insult him because she's afraid of him. And Hit might just not like him. The one with the biggest potential for being an enemy is definitely Hitame though.
So pick and choose who you like! :3