Attacks: Fire Blast
Attacks: Iron Tail
Dark Tyrannomon was among the evil Digimon that Gatomon recruited to
help Myotismon take over the real world in Episode
35 of Season 1.
In Season 2, the Digimon Emperor attempted to use several DarkTyrannomon
to stop SkullGreymon's rampage, but they
were all easily defeated by the mammoth beast.