• 
  Danielle Panabaker

  Caitlin Snow
• 
  Megalyn Echikunwoke

   Mari McCabe / ... (voice)
• 
  Melissa Benoist

   Kara Danvers / ... (voice)
• 
  Iddo Goldberg

  Red Tornado
• 
  Sunil Malhotra

  3 episodes, 2017
• 
  Bruce Thomas

  2 episodes, 2017
• 
  Russell Tovey

  The Ray
• 
  Scott Whyte

  4 episodes, 2017

• 
  Dilshad Vadsaria

  Phantom Lady
• 
  Matthew Mercer

  Black Arrow
• 
  Jason Mitchell

  John Trujillo
• 
  Carlos Valdes

  3 episodes, 2017
• 
  Christopher Corey Smith

  Donald
• 
  Colleen O'Shaughnessey

  Grace Terrill
• 
  Echo Kellum

  Curtis Holt