• 
  Luci Christian

   Dogkeeper (Inukashi) (9 episodes, 2011)
• 
  Hilary Haag

   Safu (10 episodes, 2011)
• 
  Chris Hutchison

   Rikiga (8 episodes, 2011)
• 
  Shinichirô Miki

   Yoming (6 episodes, 2011)
• 
  Rei Sakuma

   Karan (9 episodes, 2011)
• 
  Lesley Tesh

   Karan (9 episodes, 2011)
• 
  Masaki Terasoma

   Rikiga (8 episodes, 2011)
• 
  Greg Ayres

   Sion (11 episodes, 2011)

• 
  Kalob Martinez

   Rat (Nezumi) (11 episodes, 2011)
• 
  Yuki Kaji

   Sion (11 episodes, 2011)
• 
  Kei Shindou

   Inukashi (9 episodes, 2011)
• 
  Yoshimasa Hosoya

   Nezumi (11 episodes, 2011)
• 
  Karl Glusman

   Yoming (6 episodes, 2011)
• 
  Sumire Morohoshi

   Lili (6 episodes, 2011)
• 
  Yuka Hirose

   Female teacher / ... (5 episodes, 2011)

• 
  Kensuke Satou

   Researcher #1 / ... (7 episodes, 2011)
• 
  Kiyono Yasuno

   Safu (10 episodes, 2011)
• 
  Yuya Murakami

   Researcher #2 / ... (6 episodes, 2011)