Amp

Amps are small, electrified metal balls featured in several levels of Super Mario 64. Similar to Li'l Sparkys and Hotheads, they move around objects and platforms and if Mario comes into contact with one, he will be shocked and lose some of his health. Amps cannot be defeated by any means. They have also appeared in New Super Mario Bros., as well as various games in the Mario Party series, where they were renamed Zaps. A Zap Orb appeared in Mario Party 6 and Mario Party 7. They also appeared in Mario Party 5, but they were referred to by the traditional name of "Amps". Their name stems from Ampere (often just referred to as "amp"), the standard unit of measurement for the speed of electrical currents.

Amps reappear as an uncommon enemy in New Super Mario Bros, in several Tower levels.

Amps can also be found in many areas of Super Mario Galaxy.