Big Guy the Stilted is a gigantic robotic red Stilt Guy who is a boss in Yoshi's Island DS. He may have been originally intended to be an actual Shy Guy at one point during the course of the game though. To defeat him, the Black Yoshi had to either use eggs or Baby Bowser's flame breath to knock it into the lava that surrounded the bottom of the area he was fought on. Then once he was in the lava, Yoshi simply needed to ground pound him. This had to be done three times to reveal the Shy Guys are controlling Big Guy.