Digimon Tamers (2001)

S1E22 The Boar Wars

A series of earthquakes shakes the city, prompting the friends to gather at Guilmon's hideout. While Rika teaches Jeri about digicards, Henry reveals that the devas are inspired by the animals of the Chinese zodiac. Suddenly, a strange boy, who has been secretly observing Calumon, emerges, and the kids chase after him. When the Pig Deva, Vikarylamon, appears, Yamaki panics and activates the Juggernaut program, disregarding Henry's father's warnings about the danger it poses to the children's digimon. Despite digivolving to Growlmon, Gargomon, and Kyubimon, they struggle to confront the Pig Deva. In their moment of desperation, the tamers discover they can matrix digivolve if they wish to protect others.