Renzo Oshikiri is a third-year student in Namimori Middle School. He is the president of the Karate club. He was the leader of Team B during the pole-knocking contest.
He has dark, spiky hair with a widow's peak, a large nose and rather thick, forked eyebrows.
Oshikiri has a cousin who is an Olympic athlete.
Oshikiri is mentioned as to having been attacked and losing seven teeth, indicating he was ranked seventh in Namimori Junior High's fighting strength rankings.