BlackWarGreymon X

BlackWarGreymon X is a Dragonkin Digimon and carrier of the X-Antibody. Its negative power has been condensed to its maximum, and its cunning for seizing victory by any means necessary has been accelerated. It has imparted the strongest toughness of the "Brave Shield" to the "Dramon Killers", leading to it possessing perfected equipment of unified offense and defense. Due to its fighting style, in which it instantly plunges into the heart of the enemy with the it has equipped to its back, which boast explosive acceleration at the expense of it being able to fly for extended periods, it has certainly become the strongest form of land combat Digimon, a "Land War Hero".

Attacks
 * Dark Terra Force (暗黑のガイアフォース): Similar to WarGreymon's "Terra Force", except that it takes all of the "negative emotions" within this world and concentrates them into one spot, and then fires it.
 * Hades Force: Continuously fires its Special Move "Ankoku no Gaia Force" at ultra-high speed. Evasion of its "Hades Force" seems impossible.
 * After Burst (Afterburst): Accelerates its attacks with its vernier applied to the "Dramon Killers". It is also a one-hit knockout technique.

Etymologies
Official romanization given by the Digimon Reference Book and used in Japanese media. Some media format the "(X-Antibody)" without parentheses or leave it out entirely.
 * BlackWarGreymon (X-Antibody) (ブラックウォーグレイモン（X抗体）)
 * (En:)
 * (En:)
 * (En:), meaning "old" or "ancient".
 * X-Antibody.

Name used in Digimon Collectors. American English media expand the "X" to "X Anti-body" or spell the whole name as just "BK WarGreymon".
 * BlackWarGreymon X (ブラックウォーグレイモンX)
 * (En:)
 * (En:)
 * (En:), meaning "old" or "ancient".
 * X. From X-Antibody.

Development
Gaiomon, designed by As'maria, was originally created as BlackWarGreymon X. He was asked to redesign BlackWarGreymon to have more Japanese flair, so he designed it to dual wield two swords. It was loved so much, it was renamed and made a standalone Digimon, instead of an X-Antibody counterpart.

Digimon World 4
BK WarGreymon is an unlockable Digivolution in the game by completing the "Cursed Dungeon" sidequest in Hard Mode. His signature weapon is the "Demon Arm".

Digimon World Re:Digitize: Decode
BlackWarGreymon X digivolves from WarGreymon.

Digimon Battle
BlackWarGreymon X is a card digivolution, and digivolves from BlackWarGreymon.

Digimon Heroes!
BlackWarGreymon X-Antibody is card 6-905.

Digimon Links
BlackWarGreymon X Anti-body digivolves from BlackWarGreymon.

Digimon ReArise
BlackWarGreymon (X-Antibody) digivolves from MetalGreymon (Blue).