I'll go first. He's a reborn necromancer wizard, with a 1 level dip into death cleric.
His backstory comes with a clichénwarning for lost memories..
He lost his memory just before the start of the campaign. He was conducting a gruesome experiment on a dog, when something went wrong involving lightning. He died, but also didn't, and came to wandering around his lab years later, clutching the skull of the dog, which had rotted away to just bone.
He didn't have a name at the start of the campaign. I let a different player name him, as his character knew mine from before the accident. He came up with the truly awful name Melvin Kingston, which I've grown to love. He had a massive fear of death, having died once already, and was quite the coward in early levels.
His memories have been slowly returning, and he's had to come to terms with all the evil things he did in his previous life. I recently took a level in death domain cleric, cos we had no healer, and I found the god Jergal, Scribe of the Doomed, who is concerned only with documenting the dead in his great book. Melvin's faith has allowed him to come to terms with death, and accept it as a part of life. (His newfound ability ro wear medium armor has helped as well, lol). I love having 8 cantrips, and so so many spells to choose from. I have so many options!
I love playing him, and I'm loving the progression he's gone through. I have more planned for him.
Right now, I'm playing a changeling bard named Beer, in Ghosts of Saltmarsh. I went with the shadow touched feat and used magical secrets to access necromancy spells.
As a young changeling that did not have a home after being taken away from Khorvaire, he was raised by a family of halflings in Daggerford. Because of this he does not worship the Traveller like some other changelings. He learned at an early age to hide his true identity and to fit in as best he could. He noticed that most of the townfolk around him were happiest when they had beer, which is how he chose his name. Then again, what is a name but a collection of letters to remember a face? One without a face does not need such a thing. He learned quickly to have as many names and faces as he needed to get by.
The female halfling that raised him was a necromancer, so he learned early on that he had an interest in raising the dead. As a bard, it is useful to be able to raise your own audience at will, is it not?
He started performing at taverns in a way to both make money and learn about the people around him. He quickly realized this was his ticket to being "normal". He found himself as a crew member on a merchant ship and worked his up to be the sailor of a rickety old vessel. He sailed for freedom and stole what was needed to help his crew survive. His charisma and charm have certainly worked in his favor.
Although performance is his strength, he am extremely introverted as Beer. Now, if he is Arodeyr serenading a village of half-elves, he is as extroverted as they come. If he is Bellen Strongfoot performing for a tavern of halflings in Ethdale, he will always steal the show. However, when he is far from the spotlight, he is reserved and his motives are highly calculated.
He is a becomer. He seeks life in many forms. He maintains a collection of identifications to fit in wherever he goes.
Currently, in our campaign he is a female tabaxi pirate named Sandy, which is short for Like Sands Through The Hourglass, So Are The Days of Our Lives. One of the other players made his character an incredibly low int and low wis tabaxi who keeps forgetting who Sandy actually is, so he is repeatedly falling in love with her even after showing him my true face multiple times. It's made for some really funny interactions.