Superpower Wiki
"Hang around me long enough and you'll learn size doesn't matter."
― Hank Pym (Marvel Comics)

The power to manipulate the size of oneself. Sub-power of Size Manipulation. Technique of Personal Mastery.

Also Called

  • Active Resizing
  • Self-Growth/Self-Shrinking
  • Self-Size Alteration/Increase/Manipulation
  • Self-Enlarging/Shrinking


The user can manipulate their own size, from tiny to absolutely gigantic while retaining their physical proportions, some may be able to alter their own density. Usually, strength and durability are proportional to the size assumed, but User may gain increased abilities when growing or keep their normal ones when shrinking.



  • Basic Level: User can shrink down to half and grow up to double their normal size.
  • Advanced Level: User can shrink down to quarter and grow up to quadruple their normal size.
  • Expert Level: User can shrink down to tenth and grow up to ten times of their normal size.
  • Master Level: User can shrink down to percentage and grow up to hundred times of their normal size.
  • Ultimate Level: User can shrink down to atomic and grow up to planetary size.
  • Absolute Level: User can shrink below size of subatomic particles and grow beyond galactic size.



  • Limited to changing only their own size.
  • May be limited to how large one can grow, or how small one can shrink.
  • May have mental/emotional effects.
  • Clothing and other equipment may not change size with the user.
  • One has to be careful when becoming larger while in confined places, to avoid getting stuck/trapped inside of a building or damaging surroundings/themselves.
  • In a larger size, one becomes an easier target due to their size hindering their ability to evade attacks.
  • Grown/shrunken size causes problems with the environment:
    • Grown makes the environment too small and fragile.
    • Shrinking makes environment over-sized, making normal hazards exponentially more lethal and usually meaningless problems complicated/dangerous.
    • Might be affected by Galileo's Square-Cube Law.

Known Users

See Also: Sizeshifter.



  • Jake the Dog (Adventure Time)
  • Jafar (Aladdin)
  • Celestialsapiens (Ben 10)
    • Alien X
    • Galactic Gladiator
  • Vaxasaurians (Ben 10)
    • Humungousaur
    • Suemungousaur
  • Nanomech (Ben 10)
  • Anodites (Ben 10: Alien Force/Ultimate Alien)
    • Gwen Tennyson
    • Verdona Tennyson
    • Sunny
  • Diagon (Ben 10: Ultimate Alien)
  • Ultimate Ben (Ben 10: Ultimate Alien)
  • Size Alteration Users (Danny Phantom)
    • Pariah Dark
  • Atom (DC Comics)
  • Atom Smasher (DC Comics)
  • Apache Chief (DC Comics)
  • Elasti Girl (DC Comics)
  • Giganta (DC Comics)
  • Martians (DC Comics)
  • Capital G (Dexter's Laboratory)
  • Micro (Extinctioners)
  • Jack-Jack Parr (The Incredibles)
  • Mongolian Fist Demon (Kung Fu Panda: Legends of Awesomeness)
  • Doomagedoon (The League of Super Evil)
  • Experiment 001/Shrink (Lilo & Stitch)
  • Users of Pym Particles (Marvel Comics)
  • Groot (Marvel Comics)
  • En Sabah Nur/Apocalypse (Marvel Comics)
  • Wonder Man (Marvel Comics)
  • Hulk (Marvel Comics)
  • She-Hulk (Marvel Comics)
  • Scintilla (Marvel Comics)
  • Lazaro Kotikash (Marvel Comics)
  • Kamala Khan/Ms. Marvel (Marvel Comics)
  • Micromax (Marvel Comics)
  • Discord (My Little Pony Series)
  • Spongebob (SpongeBob SquarePants)
  • Globgor (Star vs. the Forces of Evil)
  • Gems (Steven Universe)
  • Ricardo Perez/Omni-Mass (Stretch Armstrong and the Flex Fighters)
  • Madam Mim (The Sword in The Stone)
  • Griddex (Teenage Mutant Ninja Turtles)
  • Black Hat (Villainous)
  • Susan Murphy/Ginormica (Monsters vs. Aliens)
  • Micro (Extinctioners)


  • Alice (Alice's Adventures in Wonderland); by ingesting foods from Wonderland, e.g.Upfelkuchen to grow or Pishsalver to shrink

Live Television/Movies

  • Chapulin Colorado (El Chapulin Colorado)
  • Eric Lee Harrison (Heroes)
  • Robert Ferguson (Heroes)

Video Games

  • Hibari (Senran Kagura)