Should I Let Karlach Become A Mind Flayer?
Letting Karlach become a mind flayer in Baldur’s Gate 3 is best suited to dark, survival-focused, or illithid-themed playthroughs where keeping her matters more than preserving her original identity. It carries heavy lore, ethical, and relationship costs, and it usually conflicts with heroic or romantic endings. Consider the alternative endings for her infernal engine, your party’s morality, and your desired epilogue before committing.