Sudou (須藤, Sudou) is the leader of his group of misfit teens who attend Light Yagami's Gamou prep course.
Sudou has a short crop of unkempt black hair and brown eyes. He wears a black hooded sweatshirt.
Sudou is a bully who targets and harasses those he feels are below him.
Sudou approaches Ryo and harasses him for 2,000 yen to spend at the arcade. While this goes on, Light considers killing Sudou, but decides against it due to the fact that killing someone so minor may cause the police to keep his death out of the media for a while, whereas he needs immediate results to determine whether or not the notebook of death he found actually works. Light quickly comes to the conclusion that testing the notebook on Sudou would not be wise since Light personally knows him and therefore could be traced to him.