Hi Five Ghost is a small, pale ghost. He is semi-transparent as you can see through him, but not completely through. He has basic features, eyes, and a mouth, and also has one hand sticking out of his head. It was revealed in Go Viral that Hi Five Ghost has four extra arms, or it is possible that he can spontaneously generate any number of arms that he wants. In Gut Model, it is seen he can transform into a shield.