oh gosh, where to start. I have entirely too many characters to list in a single post here. Let's try to keep this manageable, and pick just a few, I guess? Focusing on the ones I play actively right now.
Asherah 'Ash' Corvo (7th Sea)
The child of an eclectic family made up of many aunts and even more cousins, Ash took to piracy early - the way anyone does, when they're born in the pirate haven of Aragosta in the Atabean Sea. Serving for several years as a deckhand and lookout aboard the Red Wraith - commanded by the indomitable captain Mala Wake - Ash now finds herself the newly minted captain of the Woe Betide, reluctantly commanding a crew made up of ragtag mainlanders, rebellious Atabeans, and a handful of ghosts.
She did not leave her old crew on good terms - she was cast away into the sea on purpose, marooned on a rocky island with four others, wasting away until she was the lone survivor. Desperate to live, she made a foolish deal with the Devil Jonah, clawing strips of skin from her arms and giving it to the sea in sacrifice, chipping away a piece of her soul to give him. In return, he gave her the means to walk away from that spit of rock alive. She may regret her deal, but the Devil's gifts are not so easily given back.
Driven now by anger, and a desperate need to know WHO it was that cast her away to die in the first place, she now searches desperately for her former crewmates.
Pharos Olana (D&D 5e)
Life in Thera - the vast valley surrounded by mountains where their ancestors were stranded a few centuries ago, after a planar mishap, the details of which have been lost to time - is one of exploration and discovery; a life Pharos has leapt into without thinking twice. He's a bright, friendly young tiefling*, and a newly minted member of the Guild of Seekers, whose job it is to map the lands, and discover what secrets it may still be hiding. He's only just begun, but between the giant construct and the strange artifacts he and his team mates just found, they're off to a good start!
*) Or, well. He's a tiefling, right? Everybody else in his family is a tiefling. His twin brother is a tiefling. His big sister is a tiefling. So are both of his parents. And tieflings are all a little different from each other - so what if he can't seem to get the hang of spitting hellfire the way his family can, and so what if the only thing he seems capable of making with Thaumaturgy is a bit of bright, glowing light? It's just that he's not very inclined towards magic. It's no big deal**.
**) Except that it is, actually: he's an aasimar. He just doesn't know it yet.
Rue Alder (Ryuutama)
A little deergirl born and raised in the little village of Zelkova, in a country covered in vast, ancient forests, Rue made a promise with her childhood friends - one day, they would all reunite under their Promise Tree, and tell each other stories of their adventures. Her friends left, one by one, to explore the world outside the forest - one went into the vast desert, one went to seek an education in magic at the finest university in the world; one went to Orbinium, the floating isles of ingenuity and invention - but Rue stayed closer to home. She explored the forest itself, and learned the craft of medicine and healing - and for a few years, she looked after the Promise Tree, waiting for her friends to return, missing them all terribly.
... and on the eve of the day that they all did, they found their Promise Tree stolen away right before their eyes by some unknown soldiers, clad in strange armour. Swept up in a quest to get their precious Tree back, Rue is discovering that the world outside her beloved forest is much larger - and much stranger - than she ever thought possible. And she is only just beginning to realise - with a bit of dread - that this quest might be much larger, and much more important, than just her and her friends and their lost Tree.
... not included on the roster of active characters: Ianeira, the sea nymph, trying to make her way out of Hades to reunite with her loved ones. Skipped over mostly bc I've only played one session as her so far.