Koymon is a tadpole-like Rookie Digimon.
Koymon is a black Digimon with large blue eyes. Its legs a short and toeless, its arms widen to a circle in the middle, this circle is surrounded by a white fin. It also has a black tail with a teardrop shaped fin around it.
- Ice Blade: Koymon slashes the air, letting loose two large sickles of ice
- Frost Daggers: Koymon freezes his arms' fins and shoots the ice cocoons at his enemies