|Human Partner||Digimon Kaiser|
|Ultimate||Millenniumon (with Mugendramon) |
The Digimon Kaiser used data of many Digimon (The torso of Greymon; the head of Kabuterimon; the hair of Metal Greymon; the legs of Garurumon; the wings of Angemon and Airdramon; the tail of Monochromon; and the arms of Kuwagamon, Skull Greymon and Devimon) to create Chimairamon to be his servant and obliterate the Chosen Children. He eventually lost control of Chimairamon due to Devimon's dark power. The only thing that saved both Ken and the Chosen Children from it was Magnamon, with some aid from Wormmon, obliterated him with Extreme Jihad.
Chimairamon serves as the second to final boss of the game in Anode Tamer. Upon being defeated by Akiyama Ryo, he becomes Millenniumon.