The circumstance in which the user is dependent on the regular usage of drugs, devices, etc. to control/retain their powers, stay cognizant, or even to remain alive. Variation of Affinity and Aversion. Opposite to Self Sufficiency and Self-Sustenance.

Also Called

  • Life Dependency
  • Power Dependency
  • Superhuman Dependency


The user is forced to regularly use something, such as drugs, devices, species, structures, elements, etc. to perform certain tasks in order, remain alive and/or to retain/control their powers.



Known Users


  • Roger's alien species (American Dad)
  • Michael Morningstar/Darkstar (Ben 10 series)
  • Al Ghul Family (DC Comics); require use of the Lazarus Pit to regain their youth.
    • Ra's al Ghul
    • Talia al Ghul
    • Nyssa Raatko
    • The Sensei
  • Bane (DC Comics)
  • Mr. Freeze (DC Comics)
  • Two-Face (DC Comics)
  • Raven (DC Comics); must meditate daily to keep her emotions and powers in check.
  • Vandal Savage (DC Comics)
  • Johann Kraus (Hellboy/BPRD)
  • Toothless (How to Train Your Dragon)
  • Violet Parr (The Incredibles)
  • Galactus (Marvel Comics)
  • Morbius the Living Vampire (Marvel Comics)
  • Nina Pryce (Marvel Comics)
  • Sauron (Marvel Comics)
  • Invisible Woman (Marvel Comics)
  • The Human Torch (Marvel Comics)
  • Tony Stark/Iron Man (Marvel Comics); requires his arc-reactor in order to keep metal from reaching his heart and killing him.
  • Omega Red (Marvel Comics)
  • Black Tom Cassidy (Marvel Comics)
  • The Purple Children (Marvel Comics)
  • Skips (Regular Show)
  • Werecats (Scooby-Doo on Zombie Island); need to drain life-force from victims.
    • Simone Lenoir
    • Lena Dupree
    • Jacques
  • Vampirella (Vampirella)
  • Chase Young (Xiaolin Showdown); via Lao Mang Lone Soup


  • Amata Sora (Aquarion Evol); originally
  • Angel (Buffy the Vampire Slayer)
  • Spike (Buffy the Vampire Slayer)
  • Glory (Buffy the Vampire Slayer)
  • Reapers (Blade II)
  • Max Guevara (Dark Angel)
  • Abe Sapien (Hellboy Movies)
  • Darien Fawkes (The Invisible Man)
  • Mason Eckhart (Mutant X)
  • Joshua (No Ordinary Family)
  • Dr. Dayton King (No Ordinary Family)
  • Pied Piper (Sarah Jane Adventures)
  • Darth Vader (Star Wars)
  • Sam Winchester (Supernatural); needed to consume demon blood to maintain his demon powers
  • Monsters (Supernatural); feeding on humans keep them from starvation


  • Bounts (Bleach)
  • Saya Otonashi (Blood+)
  • Febrie (A Certain Scientific Railgun)
  • Prisoners at Deadman Wonderland (Deadman Wonderland); must eat candy once every three days to prevent being poisoned
  • Dr. Gero and Android 19 (Dragon Ball Z)
  • Utsuro (Gintama)
  • Kouka (Gintama)
  • Koyori (Hand Shakers)
  • Alucard (Hellsing)
  • Kikyo (InuYasha)
  • Eclipse Virus Infectees (Nanoha)
  • Hidan (Naruto)
  • Sora (No Game No Life)
  • Shiro (No Game No Life)
  • Yume Hasegawa (Pupa); must eat her brother's flesh to stay calm
  • Shinnosuke (Ranma 1/2)
  • Mizore Shirayuki (Rosario + Vampire)
  • The Crystal Alter Form (s-Cry-ed)
  • Rea Sanka (Sankarea)
  • Kojō Akatsuki (Strike the Blood)

Video Games

  • Demigods (Asura's Wrath)
  • Frank West (Dead Rising)
  • Clear (Final Fantasy Unlimited)
  • Conduits (inFAMOUS series); must drain sources of the element they control to keep their powers ready to use
  • Raziel (Legacy of Kain)
  • Quarians (Mass Effect)
  • Volus (Mass Effect)
  • Raiden (Metal Gear Solid)
  • The Beauty and the Beast Unit (Metal Gear Solid 4: Guns of the Patriots)
  • Python (Metal Gear Solid: Portable Ops)
  • Samus Aran (Metroid)
  • Talion (Middle-earth: Shadow of Mordor)
  • Shang Tsung (Mortal Kombat)
  • Kabal (Mortal Kombat)
  • Drahmin (Mortal Kombat)
  • Sauron (Primal Rage)
  • Albert Wesker (Resident Evil)
  • Arpeggio (Sly Cooper)


  • Reki (Aria the Scarlet Ammo)
  • Yoshino (Date A Live)
  • Count Dracula (Dracula)
  • Elric of Melniboné (Elric Saga)
  • Voldemort (Harry Potter)


  • Jian (Chinese Mythology)
  • Vampires (Various Media); need to drink blood
  • Teclis (Warhammer); Teclis is sickly and frail and has to regularly drink special elixirs in order to even stand up

Known Objects





Video Games

Live Television/Movies

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