"Jar" (Japanese: ポッド Poddo "Pod" or ポット Potto "Pot") in Japanese, are a series of low-Level Flip Effect Monsters that help the controller and/or the opponent gain field and hand advantage. Because of their disruptive effects, "Fiber Jar","Cyber Jar", "Morphing Jar" and "Morphing Jar 2" have been Forbidden.
Most of the members of this series have a single eye as a distinguishing feature.
See also: Empty Jar.