Robo Shy Guy
From the Super Mario Wiki
Robo Shy Guys are robots that are modeled after Shy Guys. They make only a single brief appearance in The Super Mario Bros. Super Show! episode "Robo Koopa". Robo Shy Guys pose little threat, as almost any attack knocks one out.
Robo Koopa orders several Robo Shy Guys to keep Dr. Nerdnick captured in his own workshop in Robo Land. When Bunsen brings Mario, Luigi, Princess Toadstool and Toad to the workshop to rescue Dr. Nerdnick, they defeat the Robo Shy Guys.