Halara from master detective archives: Rain Code but with a Dungeons and Dragons storyline.

Their new name is Halara Tiamat, and they are a failed creation of Tiamat the Ruler of Evil Dragons. They were created to infiltrate the human world by using their DNA in the birth of a Dragonborn with all their power and intelligence but also human enough to infiltrate the world above Avernus and somehow get Tiamat out of Avernus. Just as Halara was being raised to their teenage years one of their Blue Dragon Friends betrayed their by killing their human cultist parents that had been responsible for their birth In order to steal their things for their own money pile. Feeling betrayed by their own kind, Halara abandoned their home and escaped. Tiamat their goddess killed the blue dragon for disobeying the plan but the damage had been done.

Not long after escaping, halara encountered Bahamut, The King of Good Dragons. He understood their Betrayal at the hands of their own kind so he gave them a special blessing to resist the control of Tiamat so that Tiamat or her kind cannot control them ever again and letting Halara choose their own path.

Halara as an adult is a Multi-class character who can switch between Rogue, Sorcerer, Wizard, Warlock, and Artificer with their 5 skill sets referencing the five heads of tiamat. Their hand to hand combat is almost unmatched and they also have access to Fire Breath, Cold Breath, poison breath, acid breath, and lightning breath weapons from each tiamat head.

Halara Tiamat lives in solitary in the medieval plane, resting in a cave that most monsters only dare tread. Inside the cave is a large heap of cash, gold, treasures, and precious materials they have taken over the years. However this is not from malice or stealing, rather someone can ask to recruit their for a job and have to pay a substantial price and it gets added to their home. It takes 120,000 gold pieces to recruit Halara on a quest or job. Will you be the one to gain her trust and heart?