Tyrannomon

Tyrannomon is a Champion Level dinosaur Digimon that is named after Tyrannosaurus Rex. He is Allomon's rival. They say a virus can turn Tyrannomon into DarkTyrannomon. They are known in Japan as Tyranomon.

Digimon Adventure
When Yamato Ishida and Koushiro Izumi found their Crests in a well outside of Piximon's area, Etemon's tracking system detected them and he sent Tyrannomon after them. He rampaged Piximon's lair as he protected the other Digi-Destined. Taichi Yagami and Greymon returned and Greymon fought and defeated him. Some others were seen with a bunch of Monochromon and his Gazimon henchmen outside of Datamon's pyramid and they were sucked into the core of Etemon's network. A Tyrannomon briefly appeared in Japan before disappearing. One was in France before the Digi-Destined went into battle against the Dark Masters.

Digimon 02
Six Tyrannomon were under the control of the Digimon Emperor's Dark Rings as they wore out Flamedramon, Halsemon, and Digmon before they were binded and defeated by Pegasmon and Nefertimon. A Tyrannomon was seen in New York while a lot were being herded in from Asia and across the India/China border. A silhouette of one was among the Digimon seen during the final battle against MaloMyotismon.

Digimon Tamers
Two Tyrannomon were among the many Digimon seen through the rip in the sky during Vikaralamon's rampage.

Digimon X-Evolution
Some Tyrannomon were seen running from Omnimon. A bunch of them were seen as a part of Silphymon's rebel group.