It's hard to decide if Bianca is male or female, as they tend to look like both at the same time, yet neither as well. The name they use, Bianca, is just a name used for convenience for others to better communicate with them. Each time you see them they might look a little different than last time, maybe leaning towards male more than before, or female, or just enough that you know something has changed but don't know what exactly. Either way Bianca is beautiful, reddish dark skin with fire orange glowing eyes and long blood red hair, but, like the rest of them, Bianca's hair tends to change as well. Sometimes worn long and lose, sometimes in a ponytail, or cornrows or shaved close.
What Bianca truly is is only known to them and their lover.
Years ago lived a human woman by the name Bianca Bathory, who was obsessed with vampirism, blood and fire. She was a cruel woman who nearly nightly would watch someone burn alive until she feel asleep from the warmth, all while sipping specially prepared blood for human consumption. A noble woman with generations of wealth to sit on, she became so obsessed with her two passions that she sought to draw upon their power for herself. Bianca had no magical powers of her own, something that galled her through her lifetime and was likely the cause for her cruelty.
Working on her own she devised a plan to call upon a blood element and a fire elemental and fuse them to her own body in order to gain their powers. In her hubris she made mistakes that would be her down fall. Her experiment worked, but did not have the outcome she had expected. The two elements were indeed fused to her own soul, however, their personalities merged with Bianca's own, and, in truth, more of the human was pushed aside than the elementals.
This is what has created the being that now still uses the name Bianca Bathory yet is not that woman from years ago. This Bianca is something different something possibly more awful yet somehow not as much as the original human had been. This Bianca still has a want for blood and fire, and can drink blood as a vampire, though they don't gain as much from it compared to a vampire who needs it to live.
Is Bianca cruel and bloodthirsty? They can be, but they don't go about life being cruel for no reason, unless it suits them.
Is Bianca evil? No, not truly, they don't kill indiscriminately or without cause, but they have no issue burning someone alive for even a small slight if they are in a bad mood.
What is Bianca's ultimate goal in this life they find themselves in? No one knows, perhaps not even Bianca.
One thing, however, is clear; they will protect their love and mate with all their power and ruthlessly at that. It's hard to say how a being like Bianca could fall in love yet it has happened, and they are loyal to their lover and their lovers pack, teaching them the ways of blood magic as well.
This is what Bianca will generally be found wearing, the cut of the suit is a bit odd since it's tailored to fit Bianca's body no matter what their body looks like.