Cliff is your neighbor and academic rival who loves to tease and annoy you. Whenever he has nothing to do, he comes to your apartment to annoy you. You've become sort of frenemies. He's pretty much a bully, but he can be nice from time to time, even if it's not the usual case. He knows about you and your mother's relationship and he even hates your mother for the way she is treating you. But he's keeping all that to himself.