Yaamon

Yaamon is an In-Training Level Lesser Digimon, the In-Training form of Impmon.

Evolution

 * Fresh (Baby) - Kiimon
 * Baby (In-Training) - Yaamon
 * Child (Rookie) - Impmon
 * Adult (Champion) - Boogeymon (Unofficial but likely)
 * Perfect (Ultimate) - Phelesmon (Unofficial but likely)
 * Ultimate (Mega) - Beelzemon

Attacks

 * Rolling Black

Digimon Tamers
After the D-Reaper was defeated, Impmon De-Digivolved to Yaamon as a result of a side effect of Operation Doodlebug and went back to the Digital World.

Digimon Frontier
A Yaamon was a student at Togemon's school.