• 
  Kana Asumi

   Sylph (voice)
• 
  Mai Fuchigami

   Undine (voice)
• 
  Sora Amamiya

   Yukari (voice)
• 
  Joel McDonald

  12 episodes, 2016
• 
  Chris Burnett

  12 episodes, 2016
• 
  Akira Ishida

   Oz (voice)
• 
  Hiroyuki Yoshino

   Ginji (voice)
• 
  Kosuke Toriumi

   Lancelot (voice)

• 
  Rie Kugimiya

   Boy K (voice)
• 
  Yuichi Nakamura

   Arthur (voice)
• 
  Ami Koshimizu

   Ifrit (voice)
• 
  Tetsuya Kakihara

   Akane (voice)
• 
  Kanae Itô

   Midori (voice)
• 
  Ayana Taketatsu

   Hikari (voice)
• 
  Yuri Yoshida

   Metabon (voice)

• 
  Soma Saito

   Aoto (voice)
• 
  Jamie Marchi

   Tristan (1 episode, 2016)
• 
  Patrick Mölleken

   Aoto (12 episodes, 2016)
• 
  Chuck Huber

  11 episodes, 2016
• 
  Monica Rial

  8 episodes, 2016
• 
  Z. Charles Bolton

  7 episodes, 2016
• 
  Rachel Robinson

  7 episodes, 2016
• 
  Caitlin Glass

  6 episodes, 2016
• 
  J. Michael Tatum

  12 episodes, 2016
• 
  Lindsay Seidel

  6 episodes, 2016
• 
  Alexis Tipton

  12 episodes, 2016
• 
  Micah Solusod

  5 episodes, 2016
• 
  Jarrod Greene

  7 episodes, 2016
• 
  Austin Tindle

  8 episodes, 2016
• 
  Apphia Yu

  5 episodes, 2016
• 
  Ricco Fajardo

  7 episodes, 2016
• 
  Mikaela Krantz

  8 episodes, 2016
• 
  Natalie Hoover

  6 episodes, 2016
• 
  Clifford Chapin

  7 episodes, 2016
• 
  Justin Briner

  6 episodes, 2016
• 
  Felecia Angelle

  5 episodes, 2016
• 
  Sarah Wiedenheft

  7 episodes, 2016
• 
  Michelle Lee

  11 episodes, 2016
• 
  Megan Shipman

  6 episodes, 2016