Vilemon

Vilemon is an evil Digimon in the anime, Digimon. He resembles a bat/wolf hybrid with a huge mouth

Digimon Adventure
Vilemon first appeared when Piedmon summoned an army of Vilemon. They were easily wiped out by various good Digimon, and the rest of the Vilemon were sucked into the Gate Of Destiny along with Piedmon.

Digimon Tamers
A Vilemon emerged into the Real World and attacked Guilmon, Terriermon, and Calumon. He was defeated by Renamon.

Digimon Data Squad
A Vilemon appeared in the Real World along with three DemiDevimon. He helped a man get money he needs from the horse track. When Marcus dicovered where Vilemon and DemiDevimon were hiding, Vilemon grew larger and fought Agumon. Agumon Digivolved to GeoGreymon, and destroyed Vilemon, along with the three DemiDevimon.