Fri'slen

• Vulcan subspecies
• Formed by a contagion resulting from experimentation performed at research outpost in 2135 on Trilan (ENT Novel: Kobayashi Maru)
• Infection spread by intimate sexual contact coupled with blood-to-blood transfer (ENT Novel: Kobayashi Maru)
• Symptoms include general physical mutation, extreme aggression, total loss of emotional control (ENT Novel: Kobayashi Maru)
  • Growth of additional vertical nictitating membranes, rows of teeth (ENT Novel: Kobayashi Maru)
  • Excessive pinnae growth and merging with scalp (ENT Novel: Kobayashi Maru)
  • Varicose veins across the body (ENT Novel: Kobayashi Maru)
  • Extreme cravings for animal flesh, emerging as cannibalistic tendencies towards untransformed Vulcans (ENT Novel: Kobayashi Maru)
• Subspecies rendered extinct following military airstrike on Trilan outpost (ENT Novel: Kobayashi Maru)