• 
  Sumire Uesaka

   Kikko Hoshino (1 episode, 2015)
• 
  Kaito Ishikawa

   Jiro Hitoyoshi (1 episode, 2015)
• 
  Aki Toyosaki

   Emi Kino (13 episodes, 2015)
• 
  Eriko Nakamura

   Fûrôta (13 episodes, 2015)
• 
  Chris Niosi

  Wakamura
• 
  Tetsuo Kanao

   Daishi Akita (12 episodes, 2015)
• 
  Shinichirô Miki

   Magotake Hitoyoshi (9 episodes, 2015)
• 
  Kenichi Suzumura

   Raito Shiba (6 episodes, 2015)

• 
  Tôru Ôkawa

   Ullr (10 episodes, 2015)
• 
  Tokuyoshi Kawashima

   Hyôma Yoshimura (12 episodes, 2015)
• 
  Chiaki Matsuzawa

   Female Announcer (7 episodes, 2015)
• 
  Daisuke Namikawa

  10 episodes, 2015-2016
• 
  Amber Lee Connors

  11 episodes, 2016
• 
  Ayana Taketatsu

  Earth-chan
• 
  Mai Yamane

  Michiko Tôzaki

• 
  Ayumu Murase

  Yumihiko Otonashi
• 
  Hitomi Kikuchi

  Chinatsu
• 
  Daisuke Takahashi

  Superhuman Baseball Boy
• 
  Hidenobu Kiuchi

  Shakkô