Robo Shy Guy
From the Super Mario Wiki
Robo Shy Guys are robots that are modeled after Shy Guys. Very little is known about them, as they only ever made a single brief appearance in The Super Mario Bros. Super Show! episode "Robo Koopa". Whether the Robo Shy Guys were built by either Dr. Nerdnick or Robo Koopa is unknown. Robo Shy Guys don't appear to pose much of a threat, as almost any attack will seemingly knock one out.
Robo Koopa ordered several Robo Shy Guys to keep Dr. Nerdnick locked up as a prisoner in his own workshop in Robo Land. When Bunsen brought Mario, Luigi, Princess Toadstool and Toad to the workshop to rescue Dr. Nerdnick, the heroes found themselves fighting off the Robo Shy Guys, who were defeated quite easily. After this instance, Robo Shy Guys were never seen again.