Quirk: Demon Head.
Type: Mutant.
Description: Turns the user into floating monster head, with tentacles that have blades & claws sticking out from below, and gives him the power to take over a dead body by replacing the head, using the tentacles to cut and tear heads from bodies. The bodies get revived and healed, with all quirk powers intact, (unless said powers were located on the head,) but instantly becomes in dire need of fluids to replace lost blood. If there are no dead bodies around, the user can use his tentacles to slash the throats of any unsuspecting victim. If his current body dies while he's attached, the user will be ejected from it and have to find a new body. Also the monster head is shockingly durable.
Drawbacks: 1: The bodies he takes over need to be fresh, with no internal decay. Nor can they have died naturally. 2: Using the tentacles to cut and tear heads from bodies can take a few minutes. 3: If the user doesn't take over a body, he'll be stuck as just a floating head, with no way to digest food, and will starve to death. 4: Most new bodies only last for a matter of months before they begin to shut down and die. 5: According to the user, this quirk didn't properly awaken until after he was brutally murdered and decapitated.
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Quirk: Giant Skeleton.
Type: Transformation.
Description: Gives the user the power to transform into giant demonic skeleton, over 30 feet tall, with a glowing part inside the rib cage. It has all the strength that you'd expect from somebody that size, but at barely a fraction of the weight it can be shockingly agile, and with its ability to instantly repair damage it's extremely durable.
Drawbacks: The glowing part inside the rib cage is the weak point, as it represents all the organs. Any solid hits there can undo the transformation and leave the user in a greatly weakened state. If hit hard enough, it can result in a mortal injury, or even death.
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Quirk: Mutagen.
Type: Emitter.
Description: Enables the user to secrete a substance with the power to turn anything it comes in contact with into monsters. By default the monsters don't get much bigger than a large man, and they only last for a short while. However with sufficient knowledge of chemistry and some experimentation, it can be altered & weaponized to create a new substance that can create monsters that are far bigger, far stronger, can last for years, and have quirk-like powers. And with enough mechanical knowledge, it can be used to power ray guns that can quickly churn out more monsters in greater numbers.
Drawbacks: The quirk does not make the monsters obedient, so they may attack anything, including each other & whoever made them, or they might just slack off & take a nap. Also you'll need a mad scientist to make the most use of it.
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Quirk: Dead Control.
Type: Emitter.
Description: Gives the user the power to transform beetles, cockroaches, and similar insects, making them glow and slightly change their forms. Once those insects are placed upon the skulls of dead corpses, mummies, or skeletons, they grant the user control over those remains. The control lasts until either the bones or the bugs are destroyed, or the bugs die naturally, and hundreds can be controlled at once.
Drawbacks: The undead are usually slow, clumsy, mindless, are only able to follow the most basic orders, and don't retain any quirks, (apart from alternate body shapes.) The insects are quite vulnerable to sprays and other common bug killing methods, and they can easy targets, due to their glowing and position on skulls. Spending too much time around rotting corpses increases the chances of getting sick.
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Quirk: Pumpkin King
Type: Emitter.
Description: Gives the user the power to supersize pumpkins and bring them to life as Jack-o-lantern monsters. The size of the pumpkins matter, so the bigger the pumpkins used to create them are, the bigger and more powerful the monsters will be. These monsters have giant heads in the form of Jack-o-lanterns, no bodies, and long extendable vines for limbs. They are completely obedient to their creator, are almost as durable as stone, are able to float in the air, can spit out seeds like a cannon, and their vine limbs are not only strong enough to flip cars and tear doors off their hinges, but can also latch onto heads and brainwash anyone they're attached to.
Drawbacks: The pumpkins used must be nearly ripe to take effect and they turn back into regular pumpkins when they begin to go bad, limiting the time frame they can be used in. Also the powers of brainwashing, including the ability to undo its effects, is exclusive to the pumpkin monsters, not the quirk user.
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AN: A few Halloween type quirks to celebrate the holiday.