Gogmagog

The Gogmagog (ゴグマゴグ) is a twin-headed entity that appears in Final Fantasy XIII-2, originally from the Dying World at 700 AF. Due to the time paradoxes that have occurred since the fall of Cocoon, the Gogmagog has partially appeared in random locations across time.

Story
At -003 AF-, half of the Gogmagog emerges from a time portal in New Bodhum and attempts to attack the town's citizens before they fend off the beast with guns. While Serah, Mog, and Noel make their way through New Bodhum to the meteorite, the Gogmagog appears, causing Cocoon to disappear. However, they beat the entity, causing Cocoon to reappear.

At -010 AF-, the much stronger Gogmagog attacks Serah, Noel, and Mog when they try to enter ruins of Paddra in the Yaschas Massif. After the hard fight, a paradox causes the Gogmagog to be sucked into the resulting time vortex. Serah, Mog, and Noel are nearly sucked in themselves but Hope appears and strikes the entity multiple times with his boomerang, causing the Gogmagog's disappearance and the party's rescue.

At -700 AF-, after Serah saves Noel from becoming trapped in an eternal dream, they fight the Gogmagog's complete form in the Dying World. After defeating it for the final time, the Dying World brightens up.

Battle
The Gogmagog utilizes Ruin-oriented spells, and it attacks using its arms to deal great amounts of damage.

Music
Four different songs play during battles against the Gogmagog: "Giant Impact" and "Breaking the Limits!" in New Bodhum -003 AF-, "Worlds Collide" in the Yaschas Massif -010 AF-, and "Knight of the Goddess" in the Dying World -700 AF-.

Etymology
The is a giant in British folklore who "was thrown off a cliff during a wrestling match with ."

Trivia

 * The Gogmagog resembles the fal'Cie Anima from Final Fantasy XIII.