This is Barnabus Cuffe, seventh year Ravenclaw. He's just stuffy and likes riddles and wants to be left alone for much part. He'll be formally polite to Simon.
Greta Catchlove, gcatchlove is a sixth year Hufflepuff. Greta is lazy, friendly and is president of something called nap club and it's just an excuse to sleep during the day. She likes everyone pretty much and can't see Simon being any different.
Daisy Hookum, dhookm is a sixth year Ravenclaw. Daisy is spacey, gentle, and soft spoken. She is usually doing some sort of art project, and can be a wee bit of a slag. I think she would like Simon quite a bit.
Emma Vanity, evanity seventh year Gryffindor and muggle born. Emma hates everyone and everything and is incredibly sarcastic. She just eyerolls at him and goes about her business.
And Meaghan McCormack, mlmccormack a fifth year Slytherin. Meaghan is caustic, has a potty mouth, and tends to want to fight the world. She's Chase Harper's girlfriend and would be LOL'ing if she knew he thought he was fine.