Barret Wallace is a playable character in Final Fantasy VII, and a recurring character in the Compilation of Final Fantasy VII. He leads the eco-terrorist group AVALANCHE, trying to prevent Shinra Electric Power Company from using Mako, the planet of Gaia's life source, as a form of energy.

Barret fights passionately for his cause and cares greatly for his allies. His seemingly benevolent cause of fighting for the Planet is a cover for his personal vendetta and anger, which he later must come to terms with. Despite his brash and sometimes violent attitude, Barret has a good heart, and is torn between fighting and caring for his daughter, Marlene.

Barret wields gun-arm, mechanical guns grafted in place of his right arm, allowing him to fire from range. His Limit Break abilities largely consist of physical attacks with these weapons.