Opportunistic

Balisiphos the Demon, Slaughterer of the Young woke up. He yawned, and stretched his transparent tentacles lazily, then looked around. He appeared to be in an attic, surrounded by candles and a pentagram drawn in chalk on the floorboards.
A human girl was cowering in front of him, dressed in a rather cheap looking gown, holding a ratty looking book.

"B-Balisiphos the Demon?" the girl quavered.
The demon looked down at her. She seemed to be about 12 years old, with long, straight black hair, a smattering of freckles on her pale face, and a pair of glasses over her emerald eyes. Cute, in a goth-y sort of way, the demon thought.

"A-as the person w-who summoned you, I command you t-to do my bidding!" the girl stammered.
Balisiphos uncurled one tentacle, then quickly wrapped it around the girl and lifted her up.
She squealed as the demon's tentacles efficiently stripped away her clothes. She blushed and covered her budding breasts. "Let me down, please!" she screamed. "I've not had a bite to eat in well over 800 years", the demon rumbled.

Without a second wasted, Balisiphos opened his maw and bit down on the girls head. The girl struggled, her arms and legs flailing in panic. With a little twist of his jaws, he neatly severed the little morsel from the body and swallowed it neat. The body slackened, its muscles relaxing in death.

He raised the headless corpse and let the fountain of blood spurting from her neck stump pour into his mouth. Balisiphos waited until the blood was drained from her body before dropping it into his open mouth. He chewed the corpse, savoring the taste and sensations of warm flesh, blood and bones crunching. He belched, and wiped his mouth with the hapless girls gown. A nice little appetizer, but that little girl didn't really sate his hunger. He shifted, wrapped his tentacles around a window, and launched himself outside.