"What size... It's great. Is this it for me?" "Don't bother with me. Right now... Right now... I want to view this a while longer. It's big. So big that no one can stand before it. An overwhelming power. So this is what fear is. The feeling you had for me. The reason you left me. So I made you suffer with a feeling like this. None can be together when a feeling like this exists between them. But now I've learned it... I've learned there's something in this world so great that I have no chance against it. From his perspective... both you and I are trivial."
The user either possesses a level of physical size either greater or smaller than that of a normal member of their species, or is simply a member of a species that is naturally bigger or smaller than humans.
Dawn Summers (Buffy the Vampire Slayer comic) was turned into a giant by a spell.
The Infinities (Marvel Comics) are a trio of entities who dwarf everything, even high level cosmic entities like Eternity in the Marvel Universe in sheer size, and their hands alone are the size of an entire galaxy.
Bigby Wolf (Fables) lives up to his name as the BIG Bad Wolf.
Walkers (DC Comics)
Fusion Gems (Steven Universe) are usually very large compared to the gems that they make up, including Opal…
Yellow Diamond (Steven Universe) is notably massive for a non-fusion gem, standing three times as tall as a common pearl.
Any user of the Colossus Titan's power (Attack on Titan) is far larger than any regular Titan or Titan Shifter, whether its user is the tall Bertolt Hoover...
...or the more short Armin Arlert.
Broly (Dragon Ball Z)
Super Shenron (Dragon Ball Super) is so massive that it dwarfs entire galaxies.
Koku-Oh (Fist of the North Star) is a black horse the size of an elephant.
Xiao-Mei (Fullmetal Alchemist) has severely stunted growth, making her small enough to fit on a human shoulder.
Ichou (Good Luck Girl) is unnaturally tall even for a misfortune god, being even taller then yamabuki who is the size of a small building.
Like all members of the Imuchakk clan, Hinahoho (Magi: The Labyrinth of Magic) possesses a gigantic physique.
Sadaharu (Gintama) is a massive dog, standing at 5'7 and weighing over 600 pounds.
Maki (My Bride is a Mermaid) is small enough to easily perch on someone's shoulder or be held in the palm of one's hand.
The Blackbeard Pirates (One Piece)
Bartholomew Kuma (One Piece)
As a Wotan, Big Pan (One Piece) is far larger than a human, but still smaller than a giant.
Whitebeard (One Piece)
Blueno (One Piece)
Despite being the younger brother of Kelly Funk, Bobby (One Piece) is twice his size with a very durable body.
Gekko Moriah (One Piece)
Sanjuan Wolf (One Piece), also known as the Colossal Battleship, is the largest giant in the world.
Shirahoshi (One Piece) is a giant-sized mermaid, especially in comparison to Luffy.
Wadatsumi (One Piece) is so massive that he makes Shirahoshi and her pet, Megalo, look small by comparison.
Charlotte Linlin (One Piece) is a human born with the size of a giant.
As a member of the Eight Kings, Battle Wolf Guinness (Toriko) is the largest and most massive member of his species.
The Boss of the Skies, the Bird King (Toriko) is the largest bird beast in the series, with a wing span large enough to completely block the light of the sun where ever it flies.
The Snake King (Toriko) is not only the largest member of the mother snake species, but also the single largest creature in the entire series, with a body so massive it encircles the entire planet and a head so large it takes up the entire horizon.
The Deer King (Toriko) is the size of a small continent.
As what amounts to a living black hole, Moon's (Toriko) true size is massive enough to absorb all light and matter that comes into contact with it.
Heracles (Toriko) is so massive that its hoof prints are the size of mountain ranges.
The Ficasdaltonphant (Toriko) is the second largest creature in the entire series, dwarfed only by Snake King, and is so enormous that entire mountain ranges are the size of pebbles compared to it.
In her true dragon form, Tohru (Miss Kobayashi's Dragon Maid) is the size of a building.
Karin (Kingdom), Heroic Woman Commander of the Land of Chu.