Series Cast 30

1. 

   Hiro Shimono

   Toshinari Seki (voice) (21 Episoder)

2. 

   Kana Hanazawa

   Rumi Yokoi (voice) (21 Episoder)

3. 

   Koji Yusa

   Tani-sensei (voice) (7 Episoder)

4. 

   Cocoro Kikuchi

   Tomoka Hashino (voice) (7 Episoder)

5. 

   Tetsuo Sakaguchi

   Narration (voice) (6 Episoder)

6. 

   Mami Shitara

   Yu Nakamura (voice) (4 Episoder)

7. 

   Jiro Saito

   Adachi-sensei (voice) (4 Episoder)

8. 

   Katsuya Shoji

   Teacher A (voice) (1 Episode), Male Student A (voice) (3 Episoder)

9. 

   Satomi Sato

   Sakurako Goto (voice) (3 Episoder)

10. Tomoaki Ikeda

    Science Teacher (voice) (2 Episoder), PA Announcement (voice) (1 Episode)

11. 

    Minoru Shiraishi

    Akiyasu Uzawa (voice) (2 Episoder)

12. 

    Shigeyuki Susaki

    Takahiro Maeda (voice) (2 Episoder)

13. Shin Goto

    Japanese Teacher (voice) (2 Episoder)

14. 

    Yuka Keicho

    Observer (voice) (1 Episode), Robot Mother (voice) (1 Episode)

15. 

    Jin Yamanoi

    Art Teacher (voice) (2 Episoder)

16. 

    Atsushi Kisaichi

    Mathematics Teacher (voice) (2 Episoder)

17. 

    Shunji Kanemune

    Male Student B (voice) (2 Episoder)

18. Kanji Obana

    Gold General (voice) (1 Episode)

19. 

    Ryo Kuratomi

    King (voice) (1 Episode)

20. 

    Kenta Matsumoto

    Referee (voice) (1 Episode)

21. 

    Toru Sakurai

    Robot Father (voice) (1 Episode)

22. 

    Marie Mizuno

    Robot Boy (voice) (1 Episode)

23. 

    Chinatsu Akasaki

    Classmate (voice) (1 Episode)

24. 

    Akari Harashima

    Student (voice) (1 Episode)

25. 

    Tarusuke Shingaki

    PE Teacher (voice) (1 Episode)

26. 

    Isamu Yusen

    Male Student B (voice) (1 Episode)

27. 

    Ikkyu Juku

    Hobby Shop Owner (voice) (1 Episode)

28. Megumi Nasu

    Music Teacher (voice) (1 Episode)

29. 

    Seigo Yokota

    Teacher B (voice) (1 Episode)

30. 

    Miki Ito

    Rumi's Mother (voice) (1 Episode)

Series Crew 38