• 
  Pamela Anderson

  ea însăși
• 
  Katie Cleary

  Herself (model and activist) (archive footage)
• 
  Nathan Diaz

  Himself (archive footage)
• 
  Gene Bauston

  Himself (farmsanctuary.org) (as Gene Baur)
• 
  Neal Barnard

  Himself (archive footage)
• 
  T. Colin Campbell

  Himself (nutritionstudies.org)
• 
  Caldwell Esselstyn Jr.

  Himself
• 
  Alan Goldhamer

  Himself (TrueNorth Health Center)

• 
  Michael Greger

  Himself (NutritionFacts.org)
• 
  Kip Andersen

  Himself (film producer) (archive footage)
• 
  Ricky Dillon

  Himself (rumored)
• 
  Carli Bybel

  Herself (archive footage)
• 
  Emily Moran Barwick

  Herself (Bite Size Vegan) (archive footage)
• 
  Damien Clarkson

  Himself (activist)
• 
  James Aspey

  Himself (activist) (archive footage)

• 
  Earthling Ed

  Himself - Surge (archive footage) (as Ed Winters)
• 
  Maarten Hajer

  Self
• 
  James Hamblin

  Self - Journalist