BooGhost Central, Boii

A Mega level Virus entity from the Dark Area, that as the name suggests, took on the identity and appearance of the demon Furfur from human literature.

Furfumon is completely silent - including lacking an audible physical voice, and everything near it feels like it's frozen in the eerie silence of a coming storm. Even though it itself doesn't really move, simply levitating in one spot, the feathers on its wings and the torn pieces of clothing constantly gently flutter as if affected by an unseen wind. Its horns emit a faint glow reminiscent of that of Saint Elmo's fires.

The two known abilities it used are Ignis Fatum - orbs of ghostly blue flame, and Darkest Night - a slow supercell cloud genesis that eventually produces unnatural violent tornadoes.

Furfumon was one of the more difficult encounters the Tamers had, as it was nearly untraceable, and no one, not even other Digimon, were alerted to its arrival, the only initial hints at its presence being odd weather patterns here and there. It was eventually noticed by meteorologists, when it started mildly affecting weather radars and similar technology - including a weak, ghostly voice - and the interference was speculated to be caused by a supernatural entity. It soon became clear that its actions didn't really have any rhyme or reason - nor was it itself interested in any communication, instead slowly manifesting stronger and stronger storms that would ultimately culminate in an outbreak of massive tornadoes that would cause severe casualties and destruction.