BlackAgumon X

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

Etymologies
Official romanization given by the Digimon Reference Book and used in the franchise. English media shortens "X-Antibody" to "X".
 * Agumon Black X (アグモン黒 (Ｘ抗体))
 * (Ja:) Aguagu (あぐあぐ), the onomatopoeia for biting.
 * (Ja:) Kuro (黒).
 * X-Antibody.