The typical Succubi averages 40 kg (90 lb) and 164 cm (5’4 ft). Though weight and height vary greatly, they are typically smaller than the average human. Their size is mainly dependent on their estrogen and testosterone levels, but can still vary otherwise.
Succubi horns vary in shape, length, and texture, but the typical Succubi has two black horns on either side of their head. They are made of bone with a thick layer of keratin covering them. Longer and wider horns are directly connected to high amounts of testosterone, while smaller and thinner horns are correlated to higher amounts of estrogen. This has unfortunately led to an unspoken social hierarchy with many smaller horned Succubi considered ‘weak’ (see social structure). Horns start growing a year after birth, stopping as puberty ends and do not grow back if broken.
The hair of the Succubi varies length, style, and color. Colors can vary from bright and unnatural to something found in humans.
The eyes of the Succubi are commonly a single bright or pastel color, but can vary between Succubi. The sclera is typically white with the pupil being round and black.
The average Succubi ears are 5.08 cm (2 in) in length and come to a point at the helix (excluding Lop Succubi). They lay flat against the head but can be exaggerated in drawings by pointing outwards. Most Succubi ears point straight backwards, but some can be more tilted downwards.
The fur of the Succubi covers the whole body and can vary in texture. It can be any colors, excluding pure black and pure white.
The Succubi tail is thin with a small cartilaginous shape, typically a heart, at the end. The tip is always made of cartilage and can vary in size. Their tail is resemblant of a classic demon but has the flexibility of a monkey’s.
Succubi also express how they are feeling through their tail. They wrap their tail around an appendage of their partner as a sign of affection, also doing this with their children. They also wrap their tail around their own appendages, typically the leg, as a form of comfort. Their tail can also wrap around inanimate objects when they are bored or feeling restless.
Paw pads are not common, but some Succubi may have toe beans and paw pads. Paw pads only occur on the feet and they tend to walk more on their toes.
Succubi have blue to black colored blood. This affects the color of their flesh, mouth, organs, and skin.
Succubi age two times faster than an average human, but also has double the life span. A 24 -year-old Succubi would actually be 12 in human years. The typical lifespan of a Succubi is 210 years old, but can be cut short by diseases and accidents.
The Short Hair Succubi is one of the most common subspecies, defined by their short fur on their body. The fur can vary in texture. They also have the typical Succubi traits of horns, cartilage tipped tail, pointed ears, and colorful eyes.
The Angora Succubi is very similar and common to the Short Hair Succubi except having long fur covering their body. The fur can vary in thickness and texture from Succubi to Succubi but is typically 3.81 cm (1 ½ in.) in length or longer. They also give birth to litters, having 4-8 at a time. Angora Incubi typically live in cooler climates but can be found all over TFS. They also have the typical Succubi traits of horns, cartilage tipped tail, pointed ears, and colorful eyes.
The Sphynx Succubi is a common type of Incubi having no fur and only skin. They are prone to sunburns during the summer and typically wear heavy clothing during the winter months to avoid frostbite.Sphynx Succubi typically live in hotter climates but can be found all over TFS. They also have the typical Succubi traits of horns, cartilage tipped tail, pointed ears, and colorful eyes.
The Succubi is a common type of Incubi with long, ‘floppy’ ears. Resembling rabbits, their ears fall just past their shoulders, covered in short hair and rounded. They also have the typical Succubi traits of horns, cartilage tipped tail, short fur, and colorful eyes.
The Succubi is primarily omnivorous, eating a wide variety of meats, vegetables, and fruits, prepared or raw. The pickiness of Succubi varies from person to person, some eating pretty much anything to others keeping to a strict diet. Some eat with dietary restrictions, (ie vegan, pescatarian, gluten-free, lactose-free) either by personal choice or because of allergies.
A very controversial topic in The Flip Side universe is the consumption of human flesh. Succubi consider it a delicacy and usually can’t resist the urge if offered, not even affected by their stance on the topic. Though it is a difficult item to acquire, it is commonly found in the back market.
The consumption and killing of humans is illegal in The Flip Side, anyone caught doing so will be charged and be sentenced to jail time. Some are torn on the topic, with many supporting the law and keeping it illegal, but there is a small group of demons wanting to legalize the practice. Some stand by its ‘health benefits’, though this is unsupported by professionals, while others see no need to conserve the human population.
Succubi are typically very social creatures, keeping in large groups of usually other Succubi or Keyhole Incubi. They are very family orientated and tend to keep friends very close. There are outliers, some Succubi becoming recluse and pulling away from society.
Horn size is an unspoken social structure within the Keyhole Incubi and Succubi community. Succubi with thicker and taller horns are considered to be more powerful and masculine compared to their smaller horned counterparts. Though many don’t go by this old way of thinking it is still rooted deep in their culture, making them unconsciously judge each other.
The horns are a very important part of Succubi culture. One display of this is horn painting. Horn painting is done at important events like weddings, but can even be done for parties. A Succubi family is represented by two colors, these colors being anything but black. The parents and children of the family will paint their horns with the same colors, using it as a crest of sorts. Once the child of a Succubi is married, they will then choose one of their colors, and one of their partners, to make their own family colors. This will then be passed down to their children and will be mixed again once they are married.
Succubi are typically peaceful demons, their social nature making them fairly friendly. They do tend to manipulate some gullible demons, Syrens especially. Otherwise they get along very well with the others, having no social grudges besides Titocons.
The relationship between Titocons and Succubi is rocky at best. Titocons tend to view Succubi as ‘prey’ and constantly look down upon them. It is not uncommon for a Titocon to kill a Succubi, their aggressive nature clashes greatly with the teasing personality of a Succubi.
The species of The Other Side tend to look down on those in The Flip side. Though they rarely interact, some TFS species not even knowing they exist, it never seems to end well. To the angels, all demons are the same, including Succubi. Some may consider them worse than average demons because of their manipulative nature.
Many humans tend to look down on Succubi, seeing them as ‘lowlifes’ and ‘worthless’. Few humans have sympathy for these demons, seeing them as equals rather than pests. There are human organized groups labelled ‘Demon Hunters’, people that go searching specifically to destroy demons.