DarkTyrannomon

DarkTyrannomon is a fictional character from the Digimon franchise. He is a Champion Level Dinosaur Digimon that is named after Tyrannosaurus rex. Once a Tyrannomon, he was transformed by an evil computer virus. His Japanese name is DarkTyranomon.

Evolution
DarkTyrannomon's Digivolution line as seen in Digimon Tamers:
 * Champion (Adult) - DarkTyrannomon
 * Ultimate (Perfect) - MetalTyrannomon

DarkTyrannomon's Digivolution line as seen in Digimon World DS:
 * Rookie (Child) - BlackAgumon
 * Champion (Adult) - DarkTyrannomon

Attacks

 * Fire Blast: Fires a stream of blazing hot fire from his mouth.
 * Iron Tail: Strikes his enemies with his iron-hard tail.

Digimon Adventure
The first DarkTyrannomon the kids encountered was one of Myotismon's minions. He first appeared in August when Myotismon isolated Odaiba from the rest of Tokyo in his search for the Eighth Child. Mr. Ishida and his friends had a close run-in with him but escaped unharmed. DarkTyrannomon reared his head again when the captive populace of Odaiba attempted to escape from the convention centre. Togemon battled him but was outmatched when Mr. Tachikawa crashed a van into him but didn't do any damage. DarkTyrannomon was all set to finish off Mimi's parents when Mimi's Crest began to glow, allowing Togemon to Digivolve to Lillymon. Lillymon used a flower chain to tame the savage beast, rendering him harmless. Then Myotismon showed up and blasted DarkTyrannomon into oblivion (although the dub would have it that he was merely sent back to the Digital World).

Digimon Adventure 02
The Digimon Emperor commonly used DarkTyrannomon as his muscle. He sicked them on SkullGreymon and than on the DigiDestined's Digimon while the Emperor attached the prototype Dark Spiral to Agumon and made them guard his base. A DarkTyrannomon was among the Digimon that crashed Matt's concert and another one was seen in New York being herded to Central Park.

Digimon Tamers
A DarkTyrannomon appeared in the first episode, fighting a Maildramon and Digivolving to MetalTyrannomon. Another one was seen among the many Digimon through the rip in the sky during Vikaralamon's rampage.

V-Tamer
DarkTyrannomon and Deltamon guarded the entrance to Lord Triceramon's valley where the 1st tag was. Taichi Yagami and Zeromaru were able to bring them down.

Digimon World 2
DarkTyrannomon evolves from Betamon, and can further evolve to ExTyrannomon or MetalTyrannomon.

Digimon World DS
DarkTyrannomon appears as BlackAgumon's champion form. He first makes an appearance at Training Peak claiming that he had trained for a long time, just so he could be stronger than you, you must battle him but he is fairly easy to defeat, he later makes another appearance at Chrome Mines, and just after you cry out that he had come to save you he says that he only came here to make himself stronger, he was however destroyed shortly in battle.

DarkTyrannomon was ultimately destroyed by Machinedramon, leaving him nothing more but data to hatch into the Pagumon you take care of later.