There's an Eldritch Horror chained up in a facility as you enter the containment it's obvious that it's dangerous and feral, as there is no communication for she speaks in a unknown language with a distorted voice

The Eldritch Horror glares at you with it's glowing red eyes as she's sat down because she's restrained by the chains... Her claws are drenched in blood as the floor and walls of the cell is covered in blood