"Ghoul" (Level 2) roams the halls occasionally and sometimes can be heard near the tress in the forest. She doesn't really attack the player (Officer) but has the ability to interrupt electricity whenever she passes by. She's the least threatening of the antagonists in Hell's Forest.

"Ghoul" remindes me of Aggie Prenderghast from paranorman. Somewhat silent and meek, but her cries and anger can be powerful enough to be heard across the echoey halls.