Agumon is partnered to Teru Raku. When Teru is controlled by MetalPhantomon, Agumon first appears as a MetalGreymon X to save him. Later, Teru manages to get Agumon to digivolve to Greymon X. After receiving power from the Holy Knights, Agumon gains Omekamon as a Champion Digivolution.
Greymon X appears as digivolution of Agumon X after receieving power from Duke, to Omekamon. Greymon X is Teru Raku's partner.