A Digimon whose body mutated into something resembling a gun barrel. Nobody really knows how it came into existence, but it's driven by a strong sense of justice and works as a "Virus Buster"—basically a Digimon that hunts down and deletes evil, whether it's lurking in Vaccine types or Virus types.
That said, fans often note a pretty glaring contradiction in its character: it's got a serious gambling addiction and is absolutely obsessed with Russian roulette. This obsession is wild enough that it'll give a Virus Digimon a pass if they can beat it in a game, at least temporarily. So you've got this righteous virus hunter that can be bought off by the chance to gamble. It's part of what makes it memorable.
Content compiled by AnimeList.moe from publicly available sources.