Messhi Kuguhara

About

Blood Type: AB
Affiliation: Hakoniwa Academy
Occupation: Class 13-1 Homeroom Teacher and Student Council Faculty Advisor
Subject: Japanese History

Kuguhara is Medaka Kurokami's homeroom teacher. Since Medaka is the only student who attends class, Medaka and Kuguhara had lots of time to talk. He had some part in Medaka deciding to become the Student Council president.

(Source: Medaka Box Wikia)