Satori Tendou is a third-year student at Shiratorizawa Academy and one of the volleyball team's middle blockers. He is often referred to as the Guess Monster by other teams. Tendō has spiky, bright red hair, with eyebrows of a corresponding color. He also has large, downturned eyes giving him a sleepy looking expression. His irises are small and dark red, while the ends of his mouth curve into a slight smirk. He sports the standard Shiratorizawa uniform, is tall and has a medium build.