She opened it-to find a black, demonic looking creature on the other side.

Did the poor saps know they were working for demonic creatures?

He turned his head and saw three of the demonic creatures flying directly at him.

Why would a demonic creature try to help them?

Many people were confused by the addition of the demonic creatures.

He kills his wife for giving birth to such a demonic creature.

A demonic creature, by its very nature, had to be revolting.

I want you to protect the world from demonic creatures.

The demonic creature slashed his legs, taking them out from under him.

The demonic creature hovered for a moment, then drew back.