Britneysil was born to two human parents, Bishop and Lotdrem Kendov the Dragonborn, in the Rift in Skyrim. Initially, her blotched skin looked to be odd birthmarks, but with time black scales grew forth from the dark patches. She aged at a rapid pace compared to her older brother, Jules. By the time she was ten, she was the size of the 14-year-old. She had also gained two sets of horns, a tail, and fangs. Her face was a poorly made merger of human and beast, and her appearance was horrifying enough that her father would often lock her in the basement with the forge.
When Britneysil is feeling particularly powerful or angry, this is the vibe.
Britneysil had a rather rough upbringing. Because of this, she is reluctant to have meaningful interactions with "mortals". However, when she is with her friends and feels really comfortable, she becomes the life of the party. Watch out though! If you get on her bad side, she has a monsterous appetite.
Britneysil Kendov was born in her parent's just outside of Riften. Clergy from the Temple of Mara came to assist Lotdrem the Dragonborn in the birth of her second child. They noticed dark colorations on some parts of her skin and that her jaws appeared malformed, so they blessed her with Mara's grace in the hope that this would be a temporary ailment.
Lotdrem and Bishop Kendov decide to move somewhere more family-friendly. The house in the Rift was best when it was just the two of them, but there were many predators that roamed the wilds nearby, and the house was beginning to feel small for four people. So they chose a manor that Lotdrem built on land she bought from the Jarl of Falkreath. This house came to be known as Lakeview manor.
Britneysil begins to develop horns on top of her head. Horrified, her father tried to file them down. This process was exceedingly painful and caused her to bleed profusely. In a panic, Bishop tried to stop the bleeding by cauterizing the wounds with hot irons. Britneysil, in horrible pain and not understanding what he was doing and why, bites his arm. Both are scarred by this incident, Britneysil mentally and Bishop physically. Lotdrem kicks Bishop out of the house for a few months.
Britneysil became much larger than her older brother, Jules. She also develops more draconic features, such as a tail. Her left hand is a fearsome and mighty claw while her right is human. She also becomes quite aggressive with her parents, more specifically Bishop, which results in them "putting her in time-out" in the basement with the forge. As the problem was left unresolved, it gradually worsened. Britneysil went from spending minutes to hours to days in the basement with little attention. She becomes even more prone to lashing out violently and withdrawn.
A heavy rain looms over Falkreath, and Lotdrem and Bishop go out to help those in danger of flooding. This leaves Jules and Britneysil alone in the house, with Britneysil locked in the basement. The flood waters begin to seep into the basement and she realizes that she might drown if she does not escape. As the waters reach her waist, Jules hears her screaming and goes to check on her, allowing her to escape. She tell Jules that they both need to leave, but that she was going for good. Despite his protests, she packs her belongings and takes some books from her mother's library and rides away on her family's fastest horse, Fleet-foot, leaving the Kendov family behind.
Brineysil charts a course through the rain to the Throat of the World to recieve wisdom from Parturnaax, the dragon leader of the Greybeards. Her mother had told her of his role in taking down Alduin, and she thought maybe he could help. Those in Ivarstead where unsure of why a cloaked stranger ascended the 7,000 steps, but did not yield her. The Greybeards initially did not allow her passage. They allowed her to try to clear the way for herself, however, as only one with the power of the dragon tongue, The Thu'um, could. They were unaware of her draconic features, and the fact that this included The Thu'um.
Parthurnaax encourages Britneysil to hold counsel with her parents, but she insists that there is no room for remedy. As the two argue, the tear in the fabric of reality that the ancient dragon has kept watch over reawakens. Britneysil enters it despite the dragon's protest.
After waking up in an entirely unfamiliar area, Britneysil discovered that now she lacked a common tongue with the fearful peasant-folk that in habited this land. She resigned herself to living a secluded, hermit-like lifestyle. That is, until she was hunted down by a witcher - a monster hunter - after he was told that wolves were attacking the hamlet. She'd occupied the wolves' den. After nearly dying to the witcher and the ranger that hired him, he decided to keep her alive. This lead to him taking her in and - with the help of a sorceress - raising her as a monster hunter.
Britneysil continues to grow more draconic and now has wings. During a particularly messy battle, Geralt of Rivia is put in a bad position. To protect him, she panics and throws herself in harm's way. In the process, something inside her clicks and she transforms into a dragon fully for the first time and is thrown into a blood-frenzy. She only regains her senses after she has turned the battlefield into a bloodbath and finds Geralt minorly injured on the ground. Fearing the consequences and shame, she flees and goes into hiding. She is then greated by a familiar man she has never met before, who kidnaps her after assuring he had the perfect place for her. The man is Sheogorath, Daedric Prince of Madness.
She befriends Lizbeth, Mercanth, and Fioria all of whom Sheogorath had taken into his realm. Sheogorath is very clear that he would not force them to stay or return, but that they may want to because it is a realm they can have to themselves. Fioria and Mercanth grew up here, and attest to the place being "super rad". Lizbeth sees this as an opportunity to gather help for her cause. Her country is ruled over by a greedy evil king. Once Britneysil figures out that she can actually manipulate the flow of space with the help of Sheogorath and transport them there. Over the course of several years, they almost manage to topple the monarchy. In the final battle, Lizbeth is killed and the shock allowed Britneysil and Fioria to be captured and separated. Mercanth escapes.
Nearly a century later, Lizbeth is reincarnated and breaks her sisters free. She recruits Lucian (later Lucianth) with the help of Mercanth in the process.