Big Amp

Big Amps are, as the name would suggest, a larger variety of Amps first appearing in Mario Party 5. Despite the size difference, they have the same behavior as well as semblance as their ordinary counterparts, with the exception of both Super Mario Galaxy and Super Mario Galaxy 2.

Mario Party 5
Large variants of Amps first appear in Mario Party 5 in Shock Absorbers, along with regular Amps. They are slightly bigger than the regular Amps, and much like the regular Amps, coming into contact with them electrocutes a character.

Mario Party 6
A single Big Amp makes a cameo appearance in Mario Party 6, during the intro of Circuit Maximus. This Big Amp is noticeably larger than its predecessors from the previous game.

Mario Party 10
Big Amps reappear in Mario Party 10 in Kamek's Rocket Rampage. After Kamek loses half of his health, he uses Banzai Bills that deal three points per hit and Big Amps that deal two points per hit.

Super Mario Galaxy
Big Amps, referred to as Zap Balls, appear in Super Mario Galaxy, though they no longer have any visible facial features, unlike the regular Amps. Despite this, their behavior is identical to their smaller counterparts.

Super Mario Galaxy 2
Big Amps, again referred to as Zap Balls, return in Super Mario Galaxy 2, appearing in the Space Storm Galaxy.

New Super Mario Bros. U
Big Amps also appear in New Super Mario Bros. U, frequently in Snake Block Tower alongside their original counterparts.

They are one of the very few enemies not to return in New Super Luigi U.