Sinjin Van Cleef is a social misfit student at Hollywood Arts High School who often works on the technical aspects of the group's plays and performances. He frequently develops serious crushes on his fellow students, including Jade West, Trina Vega, Tori Vega, and Cat Valentine. He usually comes on way too strong and oddly and turns them off.His hobby is collecting teeth of past presidents' relatives and he keeps food that's been chewed but never swallowed.Sinjin is portrayed as a nerd who doesn't have many friends, although he is friendly with Burf and Luther the janitor.