The Past
Giga
Hayase, Eiji
Hertz, Heinrich
Franklin, Benjamin
Beauty
the Rabbit, Usa-chan
Morse, Samuel
Edison, Thomas
Softon
Bobobo-bo Bo-bobo
Don Patch
Tsurulina III, Tsuru
Faraday, Michael
Mizuki, Rei
Gilbert, William
Heppokomaru
Dengakuman
Oni, Maloney
Rem
Suzu
Hayase, Mari
Kuroki, Satsuki
Mikage, Joe
Hayase, Akira
Tokoro, Tennosuke
Bell, Graham
Narrator
Volta, Alessandro
Mizuki, Waka
Gaaru, Gyorai
Mizuki, Shun
Ichikawa, Fuuta
Hayase, Rika