Digimon Adventure 01
Vegiemon made his first appearence who runs a restaurant with Digitamamon. Vegiemon forced Matt, Joe, Gabumon, and Gomamon to work at his restaurant for him.
During the battle with Digitamamon, Vegiemon captured T.K., but Joe saved him, only to be seized by Vegiemon's tentacles. After WereGarurumon defeated Digitamamon, he threatened Vegiemon that if he dosen't put Joe down, he will be salad. And with that, Vegiemon forced to put Joe down and ran away. (He is never seen again, meaning that he was killed offscreen by Myotismon).
Several Vegiemon worked for Nanimon. When the Digidestined's Digimon Digivolved into their Champion forms, Nanimon, the Vegiemon, and the Numemon were so scared, they all ran away, never to be seen again.