Rotom has a body of plasma and is shaped like a lightning rod. There is a whitish blue aura of electricity around it that forms lightning bolt-shaped appendages. It has teeth, and its unique, blue eyes have a dividing line across them. As seen in the anime, Rotom will often pull pranks on unsuspecting people. Rotom has the ability to enter and control appliances. Starting in Platinum, it also has five extra forms, each based on a household appliance, which can be accessed by possessing specific appliances.