The Crimson

The crimson are the main antagonist of the dungeonneer world and for good reason too as they prove themselves very powerful on a regular basis (usually once every 1000 years).

Conversion
the crimsons most notable ability it that they can convert anyone to a crimson.This ability is used time and time again to take on entire cities, because if you already control the army/king you control the city.Once someone is converted into a crimson they fight for the crimson and can be used as a pawn in a battle, and convert others. Conversion has been used in battles

to take over the humans greatest city and use to destroy the earthen's.

The Crimson Portal
The crimson portal is an absolutely giant portal used by the crimson to transport entire armies. The Crimson portal is not a one way door, nor is it crimson specific so it could be used to attack the crimson at the core.