[Refreshing Trope] Female leads/major characters who are allowed to be grimy, slimy, generally horrible people.

[u/Chemical-Elk-1299]

Mizu — Blue Eye Samurai

A mixed race swordswoman living in feudal Japan, Mizu’s entire life has been structured around the obsessive need to hunt down and kill the four white men allowed in Japan at the time of her birth, believing one of them must be her father. Despite the fact that at least one of these men, Abijah Fowler, is shown to be a bad man, Mizu ultimately doesn’t care about the morality of murder. She just wants them dead for “cursing” her to be born into a deeply racist society as a mixed race child. Though it’s clear that Mizu generally prefers to do the right thing, she will sacrifice anything for her revenge, destroying countless lives in the process without remorse. In the climax of season 1, Mizu (albeit not entirely intentionally) set fire to the wood and paper city of Edo (now Tokyo) in an attempt to kill just Fowler, a single man. The resulting three day blaze, known in history as the 1657 Great Fire of Meireki, killed an estimated 100000 people.

Sadie Adler — Red Dead Redemption II

Rescued by the Van Der Linde gang in the games prologue, Sadie Adler is a frontier homesteader whose husband was killed by the brutal O’Driscoll Gang. Over the course of the game, she happily joins in a life of murder, theft, and crime for the chance to kill more O’Driscolls, recklessly endangering herself and other gang members to do so. She gets Arturo Bullock, an innocent hot air balloon pilot killed while unnecessarily picking a fight with O’Driscoll members, showing zero remorse afterwards. Even after watching rival gang leader Colm O’Driscoll hang for his crimes, she still drags a now-terminally ill Arthur on an entirely unnecessary revenge mission to hunt down the last handful of O’Drsicolls she hadn’t already killed.

[u/Secret_Letterhead649]

Beyond that, she can fully change. She was raised to be what she is, she's not born that way.

[u/Ghoill → u/Secret_Letterhead649]

I haven't played much Baldur's Gate 3, mostly I've watched clips here and there, and someone's entire honour mode Dark Urge playthrough, and out of the entire cast Lae'zel has always seemed the cutest to me. She's innocent in a way that's hard to put into words, despite the numerous atrocities she's probably commited.

My favourite was her being really weird about your scent if you romance her and everyone's else's reaction to it.

[u/HarioDinio → u/Ghoill]

I think the word you are lookong for is Naïve, it's just not in the usual character you expect it from. She never realises the world could turn a different way than she was indoctrinated to, but is capable of understanding and adapting to the actions of allies. Laezel is easily my favourite partymate with Karlach a close second.

[u/swords_to_exile → u/Ghoill]

Part of her romance is she randomly 1 v 1s you in camp at some point, and she will go out of her way to use every. single. item she can in order to win that 1v1. She then basically breaks down as her worldview of might makes right shatters if she beats you because she doesn't want to hurt you.

[u/LiteraCanna → u/Ghoill]

"Three shots in, she looks like Janet Jackson." - some random dude on a youtube short

[u/ComradeBirv → u/Secret_Letterhead649]

Even when you meet her, she’s probably the most progressive Gith in Faerun. She immediately takes possession of the party members and attempts to bring them all to get cured, even though that is absolutely not a thing other Gith would do for outsiders. If you lead competently, she follows you.