Ondori-san
Supporting
Yamadera, Kouichi
Onoman
Supporting
Yamadera, Kouichi
Onsen-jisan
Supporting
Chafurin
Orgolman
Supporting
Shioya, Yoku
Osenbeman
Supporting
Tamagawa, Sakiko
Oshinkomaki-kun
Supporting
Doi, Mika
Osumi-chan
Supporting
unknown
Oukui-obake
Supporting
unknown
Oyakodon-chan
Supporting
unknown
Pakupaku Ryuu
Supporting
Uchida, Naoya