Moonmon

Moonmon is the In-Training form of Lunamon. Moonmon's name comes from the English word moon.

Digimon World Dawn and Dusk
In Dusk, plenty of Moonmon appear in Magnet Mine, and can be degenerated from Lunamon only if you already have Moonmon.

Digimon Story: Lost Evolution
Chibomon can digivolve into Lunamon or Lopmon, and be found in the Clone Mine.

Digimon World Championship
Moonmon digivolves from YukimiBotamon and digivolves to BlackAgumon or Gazimon depending number of APs, or digivolves to Lunamon pass time.