• 
  Brian Holloway

   Extra / ... (7 episodes, 2007-2014)
• 
  John Carrigan

  Kargh
• 
  Meghan King Johnson

  Rand
• 
  Ron Boyd

  DeSalle
• 
  Charles Root

  Scott
• 
  James Cawley

  Kirk
• 
  Ralph M. Miller

   Extra / ... (6 episodes, 2006-2013)
• 
  John M. Kelley

  Dr. McCoy

• 
  Jay Storey

  Kyle
• 
  Bobby Rice

  Peter Kirk
• 
  Brandon Stacy

  Mr. Spock
• 
  Ed Abbate

   Extra / ... (8 episodes, 2004-2011)
• 
  Jeff Mailhotte

   Sentell / ... (12 episodes, 2004-2014)
• 
  Ron M. Gates

   Extra / ... (9 episodes, 2006-2016)
• 
  Patrick Bell

  Xon

• 
  Paul Sieber

   Ahrens / ... (8 episodes, 2006-2013)
• 
  Riva Gijanto

   Extra / ... (7 episodes, 2006-2013)
• 
  Gwendolyn Wilkins

   Extra / ... (6 episodes, 2008-2014)
• 
  Kim Stinger

  6 episodes, 2008-2013