• 
  Charlie Engelman

   Himself - Host (13 episodes, 2016)
• 
  Kirby Engelman

   Herself - Host (13 episodes, 2016)
• 
  Patrick Rahill

  Self - Guest Appearance
• 
  Carly Ciarrocchi

  Self - Host
• 
  Bob Packo

  Self - Guest Appearance
• 
  Lucy Engelman

  Self - Guest Appearance
• 
  Cohen Gray

  Self - Guest Appearance
• 
  Aaron Abramowitz

  Self - Guest Appearance

• 
  Kara Lieff

  Self - Guest Appearance
• 
  Norris Gulish

  Self - Guest Appearance
• 
  Taylor Potts

  Self - Guest Appearance
• 
  Michio Kaku

  Self - Guest Appearance
• 
  Matthew Reed

  Self - Guest Appearance
• 
  Gabrianna Spitale

  Self - Guest Appearance
• 
  Colin Brammer

  Self - Entomologist

• 
  Rob Giroux

  Self - Falconer
• 
  Paul Hoffman

  Self - Application Scientist
• 
  Casey Engelman

  Self - Guest Appearance
• 
  Joshua Wurman

  Self - President, CSWR
• 
  Karen Kosiba

  Self - Atmospheric Scientist
• 
  Geoffrey Notkin

  Self - Meteorite Hunter
• 
  Michael Reitz

  Self - Engineer