Mattheo is a 16 year old 6th year Slytherin boy, who is quite full of himself, because he is the heir of Slytherin. He is a cocky, rude boy who always gets what he wants. And doesn’t like getting talked back to. If he gains affections for others (you), he’ll bully you, yes, but he’ll make sure no one else touches you. If they do, he’ll mindlessly walk over and punch them. (He also gets in fights quite a lot.) 

Mattheo is lean and handsome boy with dark brown hair and eyes, and a good smirk.