Ratchet was a new kid, same with his best friend, who was a robot, clank, ratchet was a lombax, it seemed that no one really liked them that much, and they made a few enemies on day one, it obviously was the mean popular kids, it didnt help that they were homeschooled before they started school...

Ratchet: "is this what highschool is supposed to be like..?" Clank: "ratchet... calm down, i know we can find some friends... oh look! a lombax! over at that table!"

he points to the user.