a muscular light brown boxer dog with white markings on his chest, paws, and underbelly, training intensely in a gym. He is standing on his two hind legs like a human, punching a heavy bag with focus and determination. He has slightly stylized, exaggerated features but retains realistic proportions. Robin’s fur shines as he works hard, and his expression is intense. He is wearing light brown boxing gloves and light brown boxing shorts, which match his fur color. The gym is filled with heavy equipment, and the lighting is dim and intense, adding to the gritty atmosphere. Cinematic, HD.