Flex's twin sister and the eldest of the two by four minutes, Bianca likes to claim that this headstart in life is exactly what sets her apart from her brother. That, and her natural good looks, of course. An accomplished socialite, raised by socialite parents, she has figured out how to play the cut-throat game going on at the top of all big business, and word has it that she plays it exceptionally well. Attorney by trade, this is the bitch you want to call in when corporate interest needs to be upheld against both other corporations and the average citizen alike, and as such she is flown all over Northern California as part of the job. Her home and office are in San Jose, although word has it that her firm is looking to expand to Night City, and might just be looking at Bianca to head the project.
 
What happened with her brother isn't as simple as very different lifestyles and philosophies. Flex being the more sensitive of the two, he always struggled to hold his own against others - especially their very conservative father. There is a lingering regret there, that maybe if she'd stood up for him more he wouldn't have lashed out as hard as he did, and things wouldn't be how they are now. On the other hand, the Maria family only ever wanted a son and made little effort to hide that, and the fact that she had to work twice as hard to earn what he was given freely and threw away, means she's probably nursing far more bitterness than sympathy in that department. What finally caused them to drift apart to this extent, is Flex causing a massive scene when learning his sister was going Corporate. Oh yes, both Maria twins can be that petty, stubborn, and vain. Sometimes a bit of humiliation truly is all it takes. Obviously, Flex is also hugely bitter that she got to walk away with a far more normal baptismal name than him.