9-Volt is a character from the action game Wario Ware. He is actually described by Nintendo as a Nintendo fanboy, owning everything ever made by Nintendo, and generally perceiving every product made by them as a success. 9-Volt's microgames are all microscopic versions of classic Nintendo games such as Mario Paint and Duck Hunt. In Wario Ware, Inc. Mega Microgame$, the player must clear 15 micro-games in order to clear his level.

9-Volt is a student at Diamond Elementary, and usually gets around by way of a hoverboard. He lives at home with his never fully seen mother.

In the series' first true sequel, WarioWare Twisted!, 9-Volt gained a friend and partner in 18-Volt, a big kid with a boom box and a shared love for Nintendo.

9-Volt's name comes from the operating voltage of the NES.

Boss Game

In the Boss Game in WarioWare Mega Microgames, the player must hit balls thrown from a machine using a bat. To do this, one must press the A-button to swing the bat at the correct time. With good timing and precision, the game can be very easy. Sometimes the balls are bowled quickly, sometimes the ball moves slowly towards the character, whilst sometimes there is a black "board" blocking you to see the ball.

This game, along with many other 9-Volt games, are based off of products that only existed in Japan, such as Famicom-only devices.

For his games in Twisted and Touched, see 18-Volt's article.