That one there, that's Theodore Nott. He's one of the smartest guys you'll ever meet. He was second only to Hermione in almost every class last year.
That tall one, that's Blaise Zabini.
He's totally rich because his mom's been widowed like 7 times.
Blaise somehow knows everybody's business. He seriously knows everything about everyone.
That's why his hair is so big, it's full of secrets...
And evil takes a human form in Draco Malfoy. Don't be fooled because he may seem like your typical selfish, back-stabbing pureblood bully but in reality, he's so much more than that.
He's the Slytherin Prince - the star, those other two are just his little minions.