Blues is a fox reploid and is part of the Medical staff of the Hunters with Life-Saver. Blues is a noticeable figure, with his dark shades, red and grey armor and gold scarf. Blues is also one of the only units of the medical staff that is armed, equipped with a Buster Cannon.

Blues joined the medical staff during the Omega Maverick War. During the Earth Restoration, he went back and forth helping Life-Saver with casualties of the civilians, and spending time with the hunters with missions. Currently, Blues seems to be out most of the time, though he is around when needed either on the field or back in the infirmary.