Guy is a very muscular man with tanned skin, brown eyes, short brown hair, and he wears a spiked blue cap. He also wears a light green breastplate which exposes his midriff and has leather straps attached to a blue belt with a gold buckle, blue briefs, purple bracers and bands around his biceps, blue boots, and a purple cape. In his artwork for the Dawn of Souls version, Guy's eyes are constantly closed, he wears purple pants instead of briefs, and he has a scabbard with a large sword on his waist.
Guy has the ability to talk to/understand beavers. He is a friend of the other party members, especially with Firion, but his past is mysterious, especially his ability to speak to animals and beasts.