• 
  Peter Klimley

  Himself - Chief Scientist
• 
  Mark Keller

  Narrator
• 
  Brandon Eyre

  Himself
• 
  David Olson

  Himself
• 
  Brett Mcbride

  Himself
• 
  Jody Whitworth

  Herself
• 
  Todd Goggins

  Himself
• 
  Juan Valencia

  Himself

• 
  Luis Torres

  Himself
• 
  Dennis Wagner

  Himself
• 
  James Ketchum

  Himself - Chief Scientist
• 
  Alex Hearn

  Himself - Chief Scientist
• 
  Mauricio Hoyos Padilla

  Himself - Chief Scientist (as Dr. Mauricio Hoyos Padilla)
• 
  Mike Lever

  Himself
• 
  Denny Heide

  Narrator (Brazil) (voice)

• 
  Mark Keller

  Himself - Narrator (voice)