An Evil Force is a living monster found in the City of the Damned. According to Deckard Cain, these inanimate objects were imbued by the Lord of Terror with his vile presence. These stained glass windows can sometimes be found on the mesas in Hell. They lack both mobility and knowledge of arcane arts and cannot attack anything, however Cain speculated they are used to alert the demons of Hell of unwanted visitors.
- It is among the rarest monster in Diablo II.