Ghidorah

Gristol Malik (Psychonauts)

Gus Fring

General Grievous

General Mandible

Ghostface

Governor John Ratcliffe

Grand Moff Tarkin

Green Goblin (The Spectacular Spider-Man)

Griffith

Grimmel the Grisly

Godfrey, First Elden Lord

Godrick the Grafted

Godefroy the Grafted

Gideon Ofnir the All-Knowing

Gwyn, Lord of Cinder

Ganondorf

Goliath (theology)

Gollum

Galactus

Gregor Clegane

George Foyett (Criminal Minds)

Gaius Maro (Skyrim)

Gorbag

Grishnakh

Grant Ward

I miss Grant Ward.

Grendel (Beowulf)

Grendel (Marvel)

Gríma Wormtongue

General Maro (Skyrim)

Grand Moff Hissa

Galvatron

Griff Tannen from Back to the Future Part II

Ghazan

Ghost Writer