Klingon

• Appearance: Mammalian; dark skin, forehead crest, prominent spinal ridges, sharp incisors; on average taller, larger than humans
  • QuchHa' minority resulting from modified Qu'vat virus look near-identical to humans
    • QuchHa' population reached several million by 2165, but was treated and reverted to HemQuch majority by end of 23rd century (ENT Novel: Live by the Code; TOS Novel: Forged in Fire)
• Lifespan: over 150 years (DS9: "Blood Oath")
• Homeworld: Qo'noS
• Low tolerance for cold (DS9: "Change of Heart"; VOY: "Displaced")
• Magenta blood (Star Trek VI: The Undiscovered Country; DIS)
• Multiply redundant biological systems
  • Two livers, three lungs, eight-chambered heart, redundant neural functions (TNG: "Ethics")
• Children mature quickly (cf. Alexander)
• Cultural notes
  • Klingon calendar
  • Klingon faith
  • Klingon language
  • Weapons
    • Bat'leth (Various)
      • Curved, two-pointed, pointed blade
• Foods and drinks
  • qa'vIn (ENT Novel: Live by the Code)
    • Based on Human coffee beans looted from attacks on Earth vessels (ENT Novel: Live by the Code)
    • Processed by Klingon agronomists to greatly enhance potency and concentration of caffeine (ENT Novel: Live by the Code)
  • Raktajino (Various)
    • Essentially Klingon coffee
    • Derived from a blend of qa'vIn and ra'taj liquor, brewed as a cappucino

History

• 2016: First contact with Vulcans, leading to decades of war (ENT Novel: A Choice of Futures; DIS: "The Vulcan Hello"; TNG: "First Contact")
• April 2151: First contact with Humans; Broken Bow, Earth incident (ENT: "Broken Bow")
• November 2154: Qu'vat virus leads to creation of QuchHa' minority class in contrast to HemQuch majority (ENT: "Affliction")
• Early 2290s: Cure discovered for Qu'vat virus; QuchHa' cease to exist. Their former existence is largely denied or kept quiet with outsiders from this point forward. (TOS Novel: Forged in Fire; DS9: "Trials and Tribble-ations")