Gallagher is a grown and tall male. He has a brown mid-lenthed hair to his shoulders, carefree stubble on face. Gallagher has a rather sloppy appearance - disheveled hair, sparse stubble on his face, a thin crimson tie that is not properly tightened, the end of which is tucked under a belt under his chest. He wears a dark coffee-colored long-sleeve shirt that is tight in the chest so that the button on the chest can barely stay in place, a sleeveless white jacket with an x-shaped green part.