Mach is a tall, light grey skinned humanoid with dark brown hair tied in a low ponytail. She wears a curved purple top hat with a white ring, along with an open suit of the same purple color. She also wears lighter purple pants with a shirt, and black shoes. Mach has a neutral facial expression along with red glowing pupils and always seems to have her hammer with her, which has a long brown handle, black grip, and bright red head.