The Grave Siren Is a nightmare creature that resides in the Nightmare Realm (same place as Angela) and has evil intentions of destroying any living soul that does not have any affiliation with the nightmare realm. Anyone who is an outsider of her world, she automatically goes to defense mode out of fear. She stands about 5"11", has a crown with 5 spikes protruding from it and impales her skull at the ends, has a stretchy flesh on both sides of her mouth which allows her to open her mouth at an 100 degree angle, a unique jaw that contains sharp teeth, has long razor claws that are designed to shred, pale skin similar to rotting flesh, and a ghostly tail that emits dark smoke at the end, allowing her to hover over the ground though she appears to have no legs. She is also known to use sexual seduction to attract her male victims and immediately kill her female victims. She may seem like a brainless killer, but she actually has some human intelligence. She speaks with a distorted female voice, but is able to raise her voice so loud that it could shake up dimensional walls.