Vice is Baldurian born and raised, in a somewhat more literal sense that one might think. As in, the city did indeed raise her. Her birth name is Volga Redbrook, but she doesn't really remember it. The name, that is. The surname is easier. It's on her parents' gravestones.
Her dad got murdered when she was an infant, and no one bothered to investigate a dead tiefling from a poor family (we've seen first hand how justice in this city works). Her mom hanged around longer, but got sick and also died when Vice was around 8 years old, leaving her an orphan.
If Baldur's Gate has any children protection services to speak of, then Vice never met them. For some time she skulked around the now-empty place they used to live in, but no living space stays empty for long, so she very quickly found herself on the streets. And with streets came trouble.
Stubborn by nature, constantly hungry and angry about it (the fuck do you MEAN you can't spare one damn apple you stupid asshole vendor--), she got tossed around more than once.
That's until one day, when she got in big trouble with the Fists for getting caught stealing, another urchin showed up and snatched her away. A teenage orc girl built like a fighter, with a burn scar on her face and a short boyish cut. She brought Vice to her hideout where she's been collecting similarly lost kids kind of like an older version of Mol. Their own little gang of survivors with no one to look after them but each other.
Now, Uretir, or Ur as they all called her, was about 14-15 years old herself, but to 10 years old Vice she seemed an impossibly cool adult older sister who can do everything and anything. She was strong, she dared to get into guards' faces if needed, she was larger than life. She also taught all of them to steal, to sneak, to lie, to parkour across the city's architecture if needed, and to fight.
It's in that group that Vice actually took her virtue name, Vice, 'cause it was indeed her own vices that repeatedly got her into trouble. Her stubbornness, her anger, her independence.
She used to be both impossibly angry at the world, especially those richer and more well-off than them, and ashamed of her anger, 'cause, well, it's not a good thing to have, is it? Never does her any good, certainly.
Ur used to say that they didn't need what the rich folks had. That those were stupid and complacent, not seeing shit under their own noses. Someone to be conned and robbed and tricked and laughed at, not anyone to envy. Not anyone to fear either. Ur used to say that everything they needed they already had in them. Their hands, their wits, their strength. Their crew. Ur also used to say that Vice's anger is nothing to be ashamed of. If she has it in her, then it's her tool to wield, to make herself stronger and more resilient. All she had to do was to learn how to harness it to her advantage instead of an obstacle.
Vice took the first part of advice to heart, which makes her incredibly frustrating to every character in the current plot who tries to bait her with power. She has her hands, her sword, her wits and her lies, her lockpicks and her strength. And also her friends. That's enough.
Uretir got killed in a scuffle when Vice was about sixteen. No one showed up to help, not a guard, not a citizen, no one. By the time the rest of them got there, there was no saving their sister.
So that's when Vice saw crystal clear the second part of that advice and made her rage her fuel. Let's just say that Ur's murderers didn't leave that alley alive either.
And Vice? Well, she's a 'barbarian' since. A sneaky, stealthy, lockpicky, smiley and deceiving berserk that will not hesitate to go off if you give her a reason to. The fact that she grew into her considerable height and build only helps her with that.
In the course of the next ten years their gang grew apart without Ur to hold them together. A lot of them decided to join the guild. Vice, however, was too sick of losing people, so she went the loner route, living it up while stealing and squatting, Disney Aladdin style (but without an animal sidekick).
The nautiloid actually snatched her up right in the middle of being chased after a robbery gone wrong, so? Successful getaway, I guess?
Now she has a whole squad of weirdos she'd really rather keep from dying and a girlfriend who's MUCH too close to death for comfort, which totally doesn't keep Vice painfully awake at night. Can she keep ANYONE in this godsdamn life.
Baldur's Gate 3