Mephistomon X

Mephistomon X is a Digimon and carrier of the X-Antibody.

Etymologies
Official romanization given by the Digimon Reference Book and used in Japanese media.
 * Mephismon X-Antibody (メフィスモン (Ｘ抗体))
 * X-Antibody.
 * X-Antibody.

Standard American English naming scheme for Digimon who are not natural carriers of the X-Antibody. Base name shared with Mephistomon.
 * Mephistomon X
 * X. From X-Antibody.
 * X. From X-Antibody.