Birth of WarGrowlmon
Yamaki's Juggernaut program malfunctions, and a seemingly unstoppable Ultimate Level Digimon called Mihiramon biomerges. Takato and Guilmon try to stop Mihiramon before he harms the city.
Aired 01/07/2001EP 14 - Birth of WarGrowlmon

2001
Digimon Tamers
Takato Matsuda, Ruki Matsuno, and Lee Jenrya are children who have, by fate, received real Digimon, unlike the imaginary ones in the card game they play. Each of the children, or "Digimon Tamers", have their different views on how Digimon should be treated. But when other Digimon begin to appear around Japan, they must put aside their differences to fend off the digital intruders; even though Yamaki, who is the head of a secret organization called Hypnos is trying to eliminate all of the Digimon himself.
(Source: Anime News Network)