Dramon-type

The Dramon-type (ドラモン系/ドラモンタイプ) is a group of Digimon with "-dramon" in their names, and most possess draconic features and traits. They are descendants of Dracomon, an ancient, pure-blooded Dragon Digimon. To be worthy of the name "Dramon", a Digimon typically needs to possess some Dragon data in their DigiCores. The Dragon Man Digimon WarGreymon—as well as its darker derivatives BlackWarGreymon and ChaosBlackWarGreymon—wears special "Dramon Destroyer" (Dramon Killer) gauntlets on its arms which are deadly to Dramon Digimon, though they put itself at risk as well.

Digimon Adventure
While the are being chased by, Izzy reveals that according to his research,  is a "Dramon Destroyer" due to his gauntlets, which are highly effective against "Dramon" Digimon. Tai has warp digivolve to WarGreymon to fight MetalSeadramon, and WarGreymon is eventually able to rip him to pieces by using "Great Tornado" within MetalSeadramon's mouth.

Later, when ambushes Tai, Sora, Izzy, T.K., and Kari within his sector, WarGreymon is able to use his Dramon Destroyers to "slice him like an onion", destroying him.