The power to enhance muscle mass of oneself or others. Sub-power of Muscle Manipulation. Opposite to Muscle Mass Weakening.

Also Called

  • Hypertrophy
  • Muscle Amplification/Augmentation/Enhancement/Expansion/Increase
  • Muscle Mass Amplification/Augmentation/Expansion/Increase
  • Myokinetic Amplification/Augmentation/Enhancement/Expansion/Increase


The user can increase the muscle mass (all or only certain muscles) of oneself and others, enhancing any physical abilities pertaining to muscle, such as strength, speed, stamina, and durability.




  • May be limited to increasing the muscles of others or only themselves.
  • Overuse, use without proper training, or use without the proper anatomical adaptations may strain the user's body (even potentially causing damage).
  • Power may rapidly drain the user's stamina and lead to fatal exhaustion, after prolonged use.
  • May inadvertently restrict physical movement and mobility.

Known Users


  • Komaba Ritoku (A Certain Magical Index); via Hard Taping
  • Gyanza Rujike (Black Cat)
  • Ayon (Bleach)
  • Mask De Masculine (Bleach)
  • Meninas McAllon (Bleach)
  • Ichibē Hyōsube (Bleach)
  • Undine (Claymore)
  • Roshi (Dragon Ball Series)
  • Son Gohan (Dragon Ball Z)
  • Broly (Dragon Ball Z)
  • Saiyans (Dragon Ball Series); via Super Saiyan Third Grade
  • Garlic Jr. (Dragon Ball Z)
  • Cell (Dragon Ball Z)
  • Frieza (Dragon Ball Z)
  • Fused Zamasu (Dragon Ball Super)
  • Kale (Dragon Ball Super); via Legendary Super Saiyan
  • Broly (Dragon Ball Super); via Legendary Super Saiyan
  • Monkey D. Luffy (One Piece); via Gear Fourth - Bounceman
  • Pica (One Piece)
  • Roronoa Zoro (One Piece)
  • Urouge (One Piece)
  • Vergo (One Piece)
  • Mangetsu Hozuki (Naruto)
  • Suigetsu Hozuki (Naruto)
  • Gozu (Naruto)
  • Joy Fullbun (Fairy Tail)
  • Ichiya (Fairy Tail)
  • Shibata (Mob Psycho 100)
  • Wood (Mob Psycho 100)
  • Toriko (Toriko)
  • Mansam (Toriko)
  • Shigematsu (Toriko)
  • Tommyrod (Toriko)
  • Knocking Master Jirou (Toriko)
  • Meteor Garlic consumers (Toriko)
  • Chin Chinchin (Toriko)
  • Skull (Reborn)
  • Edajima Heihachi (Sakigake Otokojuku)
  • Mou Bu (Kingdom)
  • Shin (Kingdom)
  • Akira Kongou (Kongou Banchou)
  • Muscular (My Hero Academia)
  • All Might (My Hero Academia)
  • Wolfram (My Hero Academia)
  • High-End (My Hero Academia)
  • Kenshiro (Fist of the North Star)
  • Shinichi Izumi (Parasyte); via Migi
  • Younger Toguro (Yu Yu Hakusho)
  • Suzuki (Yu Yu Hakusho)
  • Kibano (Yu Yu Hakusho)
  • Zorcodrio (The Death Mage Who Doesn't Want a Fourth Time)


  • Jake the Dog (Adventure Time)
  • Vilgax (Ben 10); via Cyborg Enhancement
  • Ishiyama (Ben 10)
  • Fone Bone (Bone Comics)
  • Bane (DC Comics)
  • Jai West (DC Comics)
  • Martians (DC Comics)
  • Popeye (Popeye the Sailor); via spinach
  • Rick Sanchez (Rick and Morty)
  • Gentle (Marvel Comics)
  • Agent X/Nijo (Marvel Comics)
  • Vibranium (Marvel Comics)
  • Reed Richards/Mr. Fantastic (Marvel Comics)
  • Hulk (Marvel Comics)
  • Red Hulk (Marvel Comics); via Heat Empowerment
  • Jennifer Walters/She-Hulk (Marvel Comics)
  • Betty Ross/Red She-Hulk (Marvel Comics)
  • David Haller/Legion/Sally (Marvel Comics); persona of Legion
  • Captain America (Marvel Comics)
    • Steve Rogers
    • John Walker
  • Bruiser (Marvel Comics)
  • Luke Cage (Marvel Comics)
  • Wallop (Marvel Comics)
  • Metamorphia (Sonic the Comic)
  • Brick (The Incredibles)
  • Amethyst (Steven Universe)
  • Garnet (Steven Universe)
  • Biki (OK K.O.! Let's Be Heroes)
  • Nicole Watterson (The Amazing World of Gumball)

Video Games

  • Chris Redfield (Resident Evil Series)
  • Alex Mercer (Prototype)
  • James Heller (Prototype)
  • Gaston King (The Immortal Knights)
  • Vayne Carudas Solidor (Final Fantasy XII); as Vayne Novus
  • Little Mac (Super Smash Bros)
  • Raiden (Metal Gear)
  • Fighting type Pokemon or using the move "Bulk Up" (Pokemon)
  • King Dedede (Kirby)

Live Movies/Television

  • Arlee Hicks (Generation X)
  • Lycans (Underworld)
  • Knox (Heroes)
  • Xander Bly (Power Rangers Mystic Force)

Web Animation

Known Items

  • Advertisment abs healer (Daddy's Girl)
  • Venom (DC Comics)
  • Meteor Garlic (Toriko)
  • Power Perfume (Fairy Tail)
  • Molecular muscle enhancer (Kim Possible)
  • Mikado Arm (Xiaolin Showdown)
  • Baron Violent's belt (The Tick: The Animated Series)
  • Ox Talisman (Jackie Chan Adventures); one off