Sunmon

Sunmon is the In-Training form of Coronamon. Sunmon's name and design are derived from the sun.

Digimon World Dawn and Dusk
Sunmon appears in Task Canyon but only in Dawn. It digivolves into Coronamon. To degenerate into Sunmon, Coronamon must be at Lv1, and you must have previously befriended Sunmon.

Digimon Story: Lost Evolution
Sunmon can digivolve into Coronamon or Kudamon, and be found in the Class Desert.

Digimon World Championship
Sunmon can digivolve into Guilmon if it has 20 Dragon AP points or Salamon if it has 20 Holy AP points,or you can wait for passing time to Coronamon.