"It's funny, isn't it? How even the best of men can be... deceived by their true nature."
― Wilson Fisk (Marvel Cinematic Universe)
" The true self that is suppressed—the dark side of one's personality that is buried deep inside."
― Morgana (Persona 5)
" I try to resist. I really do. But he slides his fingers through my thoughts, and blocks and tweaks and rearranges, until what I see is what he wants. No path makes sense to me except the one he offers. There is no hope and no salvation. There is only Etrigan. I had no idea I was capable of this. But people change"
― Jason Blood (Demon Vol 3 #0)
"I've had a demon inside me for a couple hundred years... just waitin' for a good fight."
― Angel (Buffy the Vampire Slayer)

The power to harness the power of a beast living inside of you. Variation of Inner Being.


The user can harness the power of their inner beast; an innate creature that lies within them that grants them great power, strength and ferocity. This allows them to use their unique abilities to vastly increase their own existing ones and/or unlock new ones. The nature of the beast is naturally bound to the user's characteristics, experience and inner nature, which they can ultimately manifest into potentially anything, be they wild or tame, singular or multiple, and so on.




Inner Beast Types



  • Tranquilizers
  • Beast within users are fundamentally unique.
  • May be vulnerable to bullets and other objects.
  • If the user's inner beast is wild, Inner Beast Collaboration can tame their inner beast.
  • Removal of the inner beast may result in death due to the process of removal being extremely painful and taxing on energy.
  • The inner beast may have a will of its own, and may attempt to take over the user.

Known Users


  • Toa Hordika (Bionicle)
  • Orion (DC Comics)
  • Bruce Banner (Marvel Comics); with The Hulk
  • Illyana Rasputina/Magik (Marvel Comics); with her demonic form and persona called Darkchylde, the result of black magic corrupting her soul
  • James "Logan" Howlett/Wolverine (Marvel Comics)
  • Frank Castle/Punisher (Punisher MAX); with the Voice
  • Warren Worthington III (Marvel Comics); with the Archangel persona
  • Hank McCoy/Beast (Marvel Comics)
  • K.O. (OK K.O.! Let's Be Heroes); with Turbo K.O.
  • Steven Universe (Steven Universe Future); with his Corrupted Self
  • Beast Boy (Teen Titans); can transform into a savage werewolf-like form


  • Jio Freed (666 Satan/O-Parts Hunter); serves as the host to the Archedemon, Satan/Lucifer
  • Guts (Berserk); with the hound-like Beast of Darkness, a manifestation of all his rage and hatred
  • Visored (Bleach); can channel their inner Hollows through masks
  • Kang Too Jee (Change Guy)
  • Saiyans (Dragon Ball series); with their Oozaru/Great Apes
  • Natsu Dragneel (Fairy Tail)
  • Inuyasha (InuYasha); being half-dog demon can transform into a full-fledged demon when in life-threatening danger
  • Yuji Itadori (JUJUTSU KAISEN)
  • Jinchūriki (Naruto); with their respective Tailed Beasts
  • Beast Tamers (The Beginning After the End); with their Beast's Wills.

Live Television/Movies

  • Angel (Buffy the Vampire Slayer)
  • Goku (Dragon Ball Evolution)
  • Sgt. Wu (Grimm)
  • Haruto Souma (Kamen Rider Wizard); via tamed Phantom WizarDragon


  • Dr. Jekyll (Strange Case of Dr. Jekyll and Mr. Hyde); with his inner-evil Mr. Hyde

Video Games



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