9-Volt
School gets out at Diamond Elementary and 9-Volt skates home to do what he loves best: spinning records and playing classic Nintendo games. He pops in a cartridge into a Game Boy from the creamed spinach-color era and goes to work. The game, a parody of the original NES Dragon Warrior, has players using hit points for chances to play classic Nintendo games.
9-Volt's series is actually a brilliant example of product placement; each microgame is based on a classic Nintendo game or product, such as the NES Balloon Fight or the Super NES F-Zero. Mario-related games referenced in 9-Volts series include the original Super Mario Bros., Mario Clash, the NES Dr. Mario, Mario Paint and the original Donkey Kong.
Ken the Reporter pops up to interrupt 9-Volt's epilogue with an important announcement: the new Game Boy Advance SP is now on sale in stores everywhere. Our tech tyke leaves in such a rush that his skateboard transforms into a hoverboard.
Chicken Race, an extra game players can unlock, also features 9-Volt. Two players control either of two feet, which kick 9-Volt or Shaggy on a skateboard. Whoever coasts the closest to the end of the cliff without sailing over it wins.
Doubtlessly one of the more popular members of Wario's Diamond City crew, it should have surprised no one that 9-Volt returned for WarioWare: Twisted. In this game, he's doing his student thing at Diamond City Elementary when his teacher introduces a new student: the hulking 18-Volt. "No relation to naughty 9-Volt," the snarky teacher explains. 9-Volt and 18-Volt become fast friends and spend the afternoon playing video games at 9-Volt's house, making for a kickin' game set, "Spintendo Classics," in which the rotating mechanism takes over as the primary control for great old Nintendo games. Eventually, 9-Volt's mother, 5-Volt, orders the two to break it up. Late at night, Mrs. 5-Volt checks in on her son, only to catch him furtively playing his Game Boy SP under the covers. "I saw that!" she yells.
When 9-Volt and 18-Volt return in WarioWare: Twisted!, they have newly purchased a copy of the hot new Gamecube game, 36-Volt Man. They rush home, pop it in their system and party the night away with 9-Volt's vast collection of Nintendo products. At this point, the player makes their way through the "Retro Action" game set. Upon completion, the player sees that the two have passed out. They wake up, check out the clock and speed off for school. Late again, those no- goodniks.