 After working under his real name for a while, Cruz decided that he needed a different image, and came up with the ring persona "Black Shadow" and a black mask with white trim around the eye, mouth and nose openings.The new image was a hit and masked duo of Blue Demon and Black Shadow became known as "Los Hermanos Shadow" (Spanish for "the shadow brothers") despite not being related.Los Hermanos Shadow quickly became very popular and were at one point the main "tecnico" (good guy) team.