while i've long fallen out of love with bg3 due to pretty much running the game dry and the mis-treatment of Wyll, i forever love my first Tav as i managed to connect him to my Nwn2 character.
heres the poorly explained convoluted and many plot hole filled lore:
i head canon Safiya as infertile and so when her and John where like 'we might wanna rase a kid' they went and did some probably forbidden magic stuff basically making a construct child -using their DNA (and maybe some of Gann's, its a throuple after all) however they made two bodies as they didn't manage to be able to get a soul in the first one. so basically 2 identical babies expect one is a soulless husk.
the soulless one was put in the shadow theater in a nice little room kinda like a little 'sorry u have no soul, we still love u but like... ur kinda just a husk rn and people in west harbor aren't too cool with u in our house' thing
flash forward a decade 10 year old Casavir (guess who he was named after) low-key gets jumped by some red-wizard who kinda still have it out for Safiya and they take like part of his soul. he fine mostly - a little traumatised, but fine.
stolen part of the soul kinda gets even more fragmented as the wizards be doing shit, somehow part of the part gets into the soulless baby - who has grown, considerably slower than the other but John and Safiya had noticed cause they do visit) and so that one is no longer a husk.
before Safiya and john can find out about this a thief sneaks into the shadow-theater hearing some rumours about it (theyre a really good magic theif i guess) finds the kid and is like 'hmmm, i could prolly get some money out of this kid or raise it to be a theif like me and stick him in the spots i cant get' and as the magic thief was leaving they got caught and escaped through the portal place to... you guessed it! baldurs gate!
magic thief gets kinda caught in baldurs gate and they take the kid away,
kid gets called Tyrren as yknow... justice was done to the magic theif.
Tyrren grows up normally enough, not actually being to interested in faith but taking a great Interest in music. feeling a little empty and disconnected from things every now and then but he lives an okay-enough but not super fulfilling childhood, then the plot of bg3 happens. he kinda questions himself, gets miserable and maybe meats his 'brother'.
best part is he's a bard like John while Casivir is an archer like his grandpa.
