Sherm

Sherms are tank enemies that appear in Super Mario Odyssey. They are green with a white Bowser's emblem printed on them, fire pearlescent blue explosives, and can be found in the Wooded Kingdom, the Metro Kingdom at nighttime, the Underground Moon Caverns in the Moon Kingdom, and the Mechawiggler rematch in the Mushroom Kingdom. They can be beaten with a ground pound or a shot fired by a captured Sherm. When captured with and controlled by Cappy, the player can aim its cannon with the right Control Stick (as well as by tilting the Joy-Con/Pro Controller), and fire explosives with. The explosives can also be used to collect items. They are used to defeat Mechawiggler.

The name "Sherm" is a reference to the famous American tank, which was one of the most common tanks in  - the hat they wear in the Metro Kingdom even resembles the Ascot top hat worn in depictions of.

Their shape seems to be based on the tanks of the in World War II - ironically with the chassis and turret being dark green in color alongside the white Bowser emblem.