The snarky imp digimon, who was more or less just a minor nuisance to everyone in the early half of Tamers; but when he digivolved into Beelzemon in the later half, he became a major villain (and would commit an act that was unforgivable.) But after getting his ass kicked by the heroes, he decided to turn good and help them (and like with the Grinch, his eyes even changed color to show it!)