The Cylinders (sometimes called the Cylinder Robots) are a cyborg species led by Master Cylinder. They do not have feet and must always fly unlike Master Cylinder who does have feet and has the option to walk or fly. They were sent (led by Master Cylinder) by the Duke of Zill to destroy Felix and Poindexter and co.. They were all destroyed after Master Cylinder was destroyed. They had arms that could go in and out of them. Wack Lizardi owned two of them as his guards. These two crashed into each other however during a "prison break" and were destroyed.