Gulliver is a character from the Animal Crossing series of games.

Gracie is a character from the Animal Crossing series of games.

GLaDOS (Genetic Lifeform and Disk Operating System) is an artificial intelligence created by Aperture Science and the main antagonist of the Portal series. She is responsible for the testing and maintenance of the Aperture Science research facility and its Test Subjects.

Gabriel Belmont is the main protagonist of Castlevania: Lords of Shadow.

Gwyn, Lord of Cinder is the nephew of the Allfather Lloyd and the main antagonist of Dark Souls. At the dawn of the Age of Fire, from the dark of the world, came those who discovered the Souls of Lords within the First Flame. Wielding the power of the flame, Nito, the First of the Dead, the Witch of Izalith, and her Daughters of Chaos, Gwyn the Lord of Sunlight, and his faithful knights, and the Furtive Pygmy, challenged the Everlasting Dragons for control in the world.

The Great Grey Wolf Sif is the giant wolf that watches over Artorias' grave in Dark Souls. Found through the great doors at the back of Darkroot Garden, after passing through the forest of the Forest Hunters, he can be reached either by passsing the Hydra in Darkroot Basin or buying the Crest of Artorias to open the shortcut in Darkroot Garden.

Gadot is a founding member of the resistance group NORA and a minor character in Final Fantasy XIII and Final Fantasy XIII-2. Growing up in a Sanctum facility along with Snow Villiers, he is childhood friends with Snow, Lebreau, Maqui, and Yuj.

Gaby is a character from Shin Megami Tensei IV.