Christopher Aonuma (蒼沼 キリハ Aonuma Kiriha?) is the General of the blue "Blue Flare" army. Christopher is described in V-Jump magazine as "cold and calculated" and said to "eliminate enemies, in order to spread his power and influence". He is someone that shows very little empathy towards others including that of his own Digimon, as evident by his treatment of Golemon. He seems to be obsessed with strength and shows interest in Mikey Kudo because of his strength and abilities, wishing to add him to his own army. While he has shown to be helpful toward Taiki and his friends it was only an attempt to persuade Taiki to join his army, and when his offer was declined he immediately stopped helping. He recognizes Nene Amano by the beginning of the series, and eventually joins forces with her, though he leaves her when she tries to force him to torture a defeated Stingmon for information, despite him objecting that it would be beneath him. In the second phase of the show, he allies himself with Taiki and Nene, forming the Xros Heart United Army.
After Bagramon's defeat, Christopher moved to United States of America and starts to travel the world to investigate the DigiQuartz.