He is voiced by Derek Stephen Prince.
He resembles a larger Veemon with a horn, wings, and the letter "X" on his stomach.
Digimon Adventure 02
Veemon first digivolve to ExVeemon to protect his partner from Tortamon.
Later when the former Digimon Emperor's reactor base had a meltdown and DigiDestined rushed to prevent it. During this Davis and Veemon encountered Ken and Wormmon, digivolve to Stingmon. In his despair and regret Ken fought Arukenimon's Okuwamon, created from 10 Dark Towers, knowing he had no chance of surviving the battle. After Davis and EXVeemon smacked some sense into Ken and Stingmon their wills united allowing ExVeemon and Stingmon to DNA Digivolve into Paildramon and blew away Okuwamon and demolished the overloading reactor.
Digimon Adventure 02 The Movie: Revenge of Diaboromon
Veemon and Wormmon digivolve to ExVeemon, Stingmon, then DNA Digivolve to Paildramon and Mega Digivolve to Imperialdramon to fight Armageddemon.