• 
  Kate Revelle

   Evelyn Milgram (8 episodes, 2012-2015)
• 
  Walker Hays

   Sally Lemm (14 episodes, 2012-2015)
• 
  Richard Cutting

   Dr. Daniel Milgram (15 episodes, 2012-2015)
• 
  Josh Davidson

  Male Serious Alien
• 
  John C. Bailey

  Dr. Fred Robinette
• 
  Danielle Davy

  Lisa Hill
• 
  Stephen Jules Rubin

  Dr. Peter Steck
• 
  Joe Hansard

  Kevin

• 
  Suzanne Knapik

  Dr. Louise Finlayson
• 
  Phil Amico

  Bix Strong
• 
  Johnny Alonso

  Dean Savage, PI
• 
  Kelsey Crouch

  Alphane
• 
  Quinn Jackson

  Lily
• 
  Joseph D. Durbin

  Joe Courson
• 
  Kendra North

  Dr. Liz Wellman

• 
  Clayton Myers

  David King
• 
  Alexa Davidson

  Young Sally
• 
  Laura J. Scott

  Pam