DexDoruGreymon

DexDoruGreymon is a Ghost Digimon.

Attacks
 * Bloody Cave: Attacks the foe with the armoured spike on its head.
 * Metal Meteor: Summons a giant sphere of metal ten times its size and shoots at its foe.

Etymologies
Official romanization given by the Digimon Reference Book and used in Japanese and some American English media. English media format "DORU" without the capitalization.
 * Death-X-DORUguremon (デクスドルグレモン)
 * Death-X.
 * From DIGITAL OR UNKNOWN-MONSTERS.
 * (Ja:) Gure. Romanization of "gre" which may come from.

Name used in most American English media.
 * DexDoruGreymon
 * (Ja:) Death-X, directly from "Dekusu" (デクス).
 * From "DORU" but without the capitalization.
 * (En:), meaning "old" or "ancient".

Digimon Battle
DexDoruGreymon is the ultimate form of Dorumon and digivolves from DexDorugamon at lv.31

There was also a "Rent a Mutant Dorimon!" event in which an NPC gives a special Dorimon whose Digivolutions are Dorumon, Guardromon, DexDoruGreymon, and Raijinmon.

Digimon Masters
DexDorugreymon is an Ultimate-level Mercenary Digimon that digivolves from DexDorugamon and can digivolve to DexDorugoramon.