• Gabriel

• Gadget

• Gael

• Galactus

• Galaxy Master

• Galen Kor

• Galp

• Gambit II

• Gambit-Doppelganger

• Gamesman I

• Gamesman II

• Gamesmaster

• Gamiel the Manipulator

• Gamma-Burn

• Gammenon the Gatherer

• Ganglia

• Gantry

• Gargantua I

• Gargantua II

• Gargantus II

• Gargantus III

• Gargouille

• Garko the Man-Frog

• Garrg

• Garrok the Petrified Man

• Garrote II

• Gatecrasher

• Gaunt III

• Gauntlet I

• Gauntlet II

• Gayle Edgerton

• Gaza

• Gazelle

• Geatar

• Geist

• Gemini I

• Gemini II

• Gemini IV

• Genecide

• Genegineer I

• Gene Hayes

• General II

• General IV

• General V

• General Ching

• General Fang

• General Kreigkopf

• Genesis II

• Genie V

• Genkotsu

• Geoffrey Wilder

• Geometer

• George Waters

• Gestalt

• Ghasta

• Ghaszaszh Nyirh

• Ghath

• Ghaur

• Ghilaron

• Ghost II

• Ghost of Christmas Past

• Ghost of Ravenlock

• Ghost of Springdale High

• Ghost-Maker

• Giant

• Gibbon

• Gideon

• Gideon Mace

• Gig

• Giganto I

• Giganto II

• Gigantus I

• Giggles

• Gila

• Gilded Lily

• G. I. Max

• Gingerbread-Man

• Giraffe-Man

• Gladiatrix

• Glazier

• Glissem

• Glitch

• Glitterspike

• Glob III

• Glob Herman

• Glomm

• Glop I

• Glop II

• Gloria Hefford

• Glow Worm I

• Glump

• Gnit

• Gnome

• Goat II

• Goblin 2099

• God of the Dead

• Godstalker

• Godstorm

• Gog I

• Gog II

• Go-Go

• Goldbug

• Golddigger II

• Golden-Blade

• Goldeneye

• Golden One

• Gomdulla the Living Pharaoh

• Goody Two-Shoes

• Googam

• Gopher I

• Gordski

• Gorgeous George

• Gorgilla the Monster of Midnight Mountain

• Gorgolla the Living Gargoyle

• Gorilla-Man II

• Gor-Kill the Living Demon

• Gorko

• Gorlion

• Gormac

• Gormuu

• Gorr the Golden Gorilla

• Gort

• Goth

• Gouda

• Governor Gorth

• Grace

• Grafik

• Grand Director

• Grand Inquisitor I

• Grandmaster

• Grappler

• Gravemoss

• Graviton

• Graydon Creed

• Gray Goblin

• Great Coordinator

• Great Horned Owl-Man

• Great Video

• Green Goblin I

• Green Goblin II

• Green Goblin III

• Green Goblin V

• Green Thing

• Gregor Smirnoff

• Gremlin II

• Gremlin III

• Grey Gargoyle

• Grey King II

• Grey Wing

• Griffin

• Grimbat

• Grim Hunter

• Grim Reaper

• Grinder I

• Gripes

• Grithstane

• Grizzly I

• Grizzly III

• Grog the God-Slayer

• Grogg II

• Grogoom

• Gronk

• Groonk

• Groot the Monster from Planet X

• Grotesk the Sub-Human

• Grottu

• Growing-Man

• Gruning

• Grunt I

• Gruto

• Guardian IV

• Gulgol

• Gullin the Boar-God

• Gun

• Gunmetal Gray

• Guns Gummy

• Gunship

• Gunthar

• G'uran

• G'uranthic Guardian

• Guy Jones

• Gwydion