Larian Studios Forums Baldur's Gate III Baldur's Gate III - General Your Characters' History/Backstory

I really wouldn't worry about creating some imagined backstory for your character because either a) the game doesn't acknowledge the custom character existed before the game started(and this is the most likely) or b) the game will have other ideas in mind for who your character was before the start of the game. Either way not particularly relevant. During character creation you can set a background but the only effects that has is to give you some proficiencies and determines some challenges you can do to earn inspiration and if you're lucky you might get a dialogue choice or two. But really the background selection during character creation isn't terribly important beyond the proficiencies it gives you so select something that compliments your build well with proficiencies you can make use of.