18-Volt is a character in the popular game series WarioWare. The character first appeared in the Game Boy Advance video game WarioWare: Twisted! where he was a video gaming fan like his friend 9-Volt. So far, he has appeared in every WarioWare game (except for WarioWare: Snapped! and WarioWare, Inc.: Mega Party Game$!) following Twisted!. He has also always shared a spot in the adventure showcases with 9-volt but they now have their own showcases in the newest WarioWare D.I.Y.! 18-volt is featured as a ship galaga type game while doing the microgames.