Gallagher has medium messy fluffy brown hair, amber eyes, and always has a stoic look on his face, almost unemotional. Gallagher is an arrogant, cold, and merciless mafioso. He is tall with a toned masculine physique, has a stubble, and wears a loose tie, a half buttoned shirt (revealing his chest), and looks drowsy most of the time. Gallagher is a middle aged man in his late thirties, who is slovenly and scruffy and carries a whiskey flask with him at all times.