Ataru Mizorogi
Ataru Mizorogi
Kanji 溝呂木 辺
Rōmaji Mizogi Ataru
Occupation Teacher
Attendance No. N/A
Gender Male
Age Unknown
Status Alive
Debut Appearance
Anime Episode 1
Manga Chapter 1
Voice Actor
Voice Actor (jp) Takahiro Sakurai
Image Gallery

Ataru Mizorogi (溝呂木 辺; Mizorogi Ataru) or most commonly referred to as Mizorogi-sensei (溝呂木先生; Mizorohi-sensei; lit. Professor Mizorogi) by his students is an additional character in the manga and anime series Akuma no Riddle. He was the home room teacher of the 10th year's Black Class at Myojo Academy, who had no idea about the assassination competition that is taking place, or that the students are even assassins in the first place.

Whenever a student is expelled after failing to kill Haru Ichinose, he is told that the student has transferred out due to unknown circumstances.


He is a very friendly teacher who always wants his students to think of him as a big brother. He seems to get sad when one of his students gets transferred out of his class. However. Mizorogi-sensei seems to keep his quite positive and motivated attitude after all and wants to try his best to teach the remaining students as good as he can. He is quite proud of his job as a teacher and loves to teach his students.


He is a young man who is usually dressed up in blue jeans and a white shirt. His hair and eyes are black.

Skills and Abilities


He has been teaching biology for three years.


  • The name Ataru written as "辺" means "place".
  • Mizorogi (溝呂木) means "disagreement" (溝), "spine" (呂) and "tree" (木).
  • He is 180cm tall, the same height as Kaiba.
Community content is available under CC-BY-SA unless otherwise noted.