An unidentified Digimon that invaded from an other-dimensional Digital World. In the other dimension it's nicknamed "Oyaji" and was kept as a digital pet. It loves alcohol and violence, but once it invaded this Digital World (the details of which are still fuzzy), it Digivolved into the active creature known as Nanimon. Inspired by survival of the fittest, it threw itself into battle, but its actual power is unknown. Still, Nanimon has made it through many battles and evolved into its ultimate form.