Gluttony Ghosts

 (often nicknamed as The Stomach Ghosts, The Belly Ghosts and The Gut Ghosts) are not only posessor ghosts, but energy ghosts (spirits born out of energy of humans) that are born out of the hunger, obesity and gluttony of humans.

Biography
Possessor energy ghosts that are born out of the hunger, obesity and gluttony of humans. They have made up a type of ghostly energy called "hunger energy". When humans eat enough food, their energy is what makes the ghosts stronger and powerful.

They manifest in the form of spirits that resemble beer gut-like stomachs with visible belly buttons. They have wispy tails on the top of their body and doesn't even have limbs. Despite having lack of faces, they can speak. Like the Bulging Door Ghosts, they can bulge through solids.

When they possess people, they can bulge through their stomach as they glow a ghostly color, turn them into overweight ghosts, make them float in the air and bulge through doors and walls. What weakens the ghost is exorcising the humans they possess out of their bodies. They also repeatedly leave ectoplasm all over when they phase through solids.

Personality
Ghosts are shown to have different personalities.

Appearance
Gluttony Ghosts have stomach-like bodies with visible belly buttons. While having no limbs and a head, a ghostly tail can be shown on top.

Powers & Abilities
* = notable
 * Invisibility* - It can be unseen and always invisible. They can also turn invisible in a poltergeist-like manner.
 * Teleportation - It can teleport from place to place.
 * Intangibility* - It can phase through solid matter. For example, gluttony spirits phase inside walls to bulge through them, spooking their victims by using their fat to make walls and doors bulge and stretch.
 * Bulging* - It can bulge through solid matter instead of passing or phasing through. For example, they scare people by using their hefty build to make the walls and doors bulge and stretch.
 * Possession - It can possess people, allowing the bulging spirits to push against their stomachs by bulging through them. This turns their victims into ghosts.
 * Flight* - It could hover in thin air.
 * Poltergeization - Ghosts are allow to turn other people and animals into spirits, by possessing people's bodies.
 * Shapeshifting - Ghosts can shapeshift into a form of a wispy ball of light.
 * Puffing Up/Body Fattening - They can puff up their bodies to make them look fatter enough to bulge through solids.

Known Bulging Spirits

 * Bulging Spirits
 * The Door Ghosts (The Crowley Manor)

Tropes

 * Balloon Belly: They somehow ended up with a ghostly belly to bulge through physical matter like walls, doors, stomachs, and portraits.
 * Berserk Button: Friendly bulging spirits turn vengeful when you are mean to them, such as doing chores for a long time.
 * Beware The Nice Ones: See Berserk Button.
 * Demonic Possession: Not actually demonic, but instead it was known as ghostly possession.
 * Friendly Ghost
 * Ghostly Goals: Mostly a Type A.
 * Invisible to Normals
 * Orifice Invasion: Possessing people by shoving down their throats.
 * Our Ghosts Are Different: While they are not spirits of the deceased, they are born out of the humans' gluttony, obesity and hunger.
 * Poltergeist: They are poltergeist-like spirits who loved possessing people and turning them into ghosts.
 * Silly Spook
 * Transformation of the Possessed: When they possess people, they turn into obese ghosts.
 * Vengeful Ghost: See Beware The Nice Ones and Berserk Button.