Once known as the "Shadow Fist", Guy used to belong to a corrupt Grapper gang called the "Black Fang". Like the others, he abused the power of Dark Glades, but he eventually came to his senses and abandoned the dark power, severely hampering himself. He now takes the Grap Exams in order to train himself up to be able to fight and defeat the Black Fang. His Element is Thunder and his Glades are a sort of armor for his fists, kind of like a Brass Knuckle.