Voltorb

Voltorb is usually found in power plants and is easily mistaken for a Poke Ball. In "The Ninja Poke-Showdown," Ash and friends are trapped within the maze-like hallways of the Fuchsia Gym. They get lost following a mischievous Venonat while trying to find the gym leader. When our heroes encounter a solitary Voltorb, before anybody can even breathe, Voltorb self-destructs, spewing noxious gas and confusing everybody!

First appearance: Episode 32—"The Ninja Poke-Showdown"