#;; despite i dont htink they in canon as of now have even met--

[restrainedhungr]

Headcanon - Vlad or. . . Dad?

The Biggest reason that Briar identifies Vlad as her father, despite the fact she wasn't actually "born" in a way that would allow for this, is because of the blood they share.

(Muse dependent) Part of the mixture of blood that would become Briar was comprised of a cocktail of various animal and humanoid stands. Along with this Vladimir's own blood was also put into it to ensure that Briar would be unkillable and have an unnaturally long/eternal lifespan. Though this addition of his blood also in some ways helped give her the bloodlust that a killer needs but also with the influence of other sources of blood made it much more animalistic and uncontrollable. How the Black Rose had gotten Vladimir's blood is unknown but due to this shared blood Briar is able to identify and recognize him as her "parent" or the closest thing to a parent that she could have.