"I've created a monster inside of my head, and it's eating me alive. I've created the demons I once believed in, to get me through the night. Facing every fear 'till my blood's cold, bigger than the ghosts that haunt my hopes."
― New Years Day - My Monsters
"Hey pal I have plenty of demons, get in line."
"Hey, I thought you were sloth?"
"Sloth can be drunk."
― Homer Simpson and his Inner Demons (The Simpsons)

The power to use the abilities of personal demons. Variation of Demon Physiology, Madness Embodiment and Mental Entity Physiology.

Also Called

  • Inner Demon Physiology/Mimicry
  • Personal Demon Mimicry
  • The Inner/Personal Demon


User with this ability either is or can transform into a personal demon, a being within a person's mind that personifies a specific event or trauma that person has experienced. Their existence is often to blame for whatever mental or emotional problems the person has. It is possible for them to manifest in the real world as hallucinations.




  • Inner Beast Mastery
  • Users are bound by the rules and physics of the mental plane, and cannot exist in the real world.
  • Users may be dependent/subservient on their host.
  • May be unaware that they are simply concepts and not actual people.
  • May be unable to do anything other than what they are manifestations of.
  • The mind that they influence may be able to eradicate them naturally.

Known Users


  • Demonic Carl Stargher (The Cell)


  • Jangles the Clown (Inside Out)
  • Pizza Jenny (Steven Universe)


  • Zangetsu (Bleach)
  • DNA Voice (Elfen Lied)
  • The Little Ogre (Soul Eater)
  • The Beast of Darkness (Berserk)

Video Games

  • Shadows (Persona 3 & 4)
  • Personal Demons (Psychonauts)
  • Nightmares (Psychonauts)
  • Kochamara (Psychonauts)
  • Jasper Rolls (Psychonauts)
  • Napolean Bonaparte (Psychonauts)
  • Dingo Inflagrant (Psychonauts)
  • Doppelgangis (Realms of the Haunting)
  • Lampita Pasionado (Psychonauts)
  • Oleander's Father (Psychonauts)
  • Augustus Aquato (Psychonauts)
  • The Creep/Harlan Wade (F.E.A.R. 3)
  • The Keeper (The Evil Within)
  • The Administrator (The Evil Within: The Assignment)
  • The Blood/Inner Dracula (Castlevania: Lords of Shadow 2)
  • The Queen of Hearts (American McGee's Alice)
  • Dollmaker (Alice: Madness Returns)


  • Fallen Hana (ME!ME!ME!)


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