Robo Shy Guys are robotic Shy Guys that appeared in the episode "Robo Koopa" on The Super Mario Bros. Super Show!. Robo Koopa told several Robo Shy Guys to lock up Dr. Nerdnick in his own workshop. Bunsen, Dr. Nerdnick's helpful robot, brought Mario, Luigi, Toad, and Princess Peach to the workshop, where they defeated the Robo Shy Guys. After they had been defeated, the Robo Shy Guys never appeared in the show again.