Plezuon (プレズオン) is a Zyudenryu (Guardian Beast) from Zyuden Sentai Kyoryuger (2013), modelled on a plesiosaur and partnered with Kyoryu Violet. Besides a rocket form and a plesiosaur beast form, Plezuon can shift into a giant humanoid battle mode known as the Zyuden Giant "Plezu-Oh", which is the configuration this model represents. In the US adaptation Power Rangers Dino Charge / Dino Super Charge the same mecha appears as the Plesio Zord of the Purple Ranger, whose robot mode is called the Plesio Charge Megazord.

In Plezu-Oh mode the mecha wields the Plezu Cannon, its right arm doubling as a lance and an energy cannon, and can launch its left fist as the Plezu Knuckle rocket punch. Plezuon is also designed to combine with other Zyudenryu: together with Gabutyra and Bunpachy it forms the Bakuretsu Kyoryuzin. In the Power Rangers version the Plesio Zord supports configurations such as the Anklyo and Pachy-Rex formations.

The DX toy was released in July 2013 by Bandai (Japan) under the product name "Rocket Henkei DX Plezu-Oh" at a suggested price of roughly ¥7,500. It depicts the Zyuden Giant mode and is converted by hand between rocket/plesiosaur and robot modes; in line with other DX releases of this period it is made predominantly of plastic (ABS). Using the standard peg connections it joins with the other Kyoryuger DX Zyudenryu for larger combinations including the Bakuretsu Kyoryuzin. Note: this is the Japanese Bandai release; the equivalent Power Rangers item was sold separately by Bandai America as the Plesio Charge Megazord.