The following details the fates of characters prior to the end of the Main Quest.
Conclusion 1: The Fate of the Bloody Baron
A Changed Man: The Baron takes his wife Anna to the Blue Mountains, if you killed the tree spirit during Main Quest: The Whispering Hillock, and completed Main Quest: Return to Crookback Bog (since the Baron’s wife Anna was turned mad by the crones).
The Hanged Man: The Baron hangs himself, if you freed the tree spirit during Main Quest: The Whispering Hillock, and completed Main Quest: Return to Crookback Bog (since the Baron’s wife Anna was turned into a grotesque hag and died).
Conclusion 2: The Fate of Sara The Godling
In Godling We Trust: Sara stays in the dream house of Novigrad, if you chose to make a deal with her during Main Quest: Novigrad Dreaming. You can visit Sara and Corrine in the house, where they live together.
Banishment: Sara is cast out of the dream house of Novigrad, if you chose to throw her out during Main Quest: Novigrad Dreaming. She appears during Main Quest: Bald Mountain, having met and befriended Johnny.
Conclusion 3: The Fate of Keira Metz
A New Friend: Having fought in the Battle of Kaer Morhen, the sorceress befriended the witcher Lambert, and took him with her on her further adventurers. An odd couple to be sure, if you chose to convince her to head to Kaer Morhen during Secondary Quest: For the Advancement of Learning.
A Savage End: Headstrong but very, very wrong in her opinion that she could change Radovid’s mind about her magical abilities. She was made an example of and put on a stake in Hierarch Square, if you chose to agree she should go to Radovid during Secondary Quest: For the Advancement of Learning.
Conclusion 4: The Fate of Whoreson Junior
A Changed Man: The doppler named Dudu successfully impersonated Whoreson Junior, and the whoremonger turned over a new leaf as his businesses flourished, if you elected to kill the real Whoreson during Main Quest: Get Junior.
A Pitiful Wretch: The subsequent weeks and the wrath of the Big Four took its toll on the wretched Whoreson Junior, who fell from power into the effluent gutters of The Bits, if you elected to spare him during Main Quest: Get Junior.
Conclusion 5: The Fate of Mages
All Aboard to Kovir: With Radovid’s purge of the mages thwarted by you and Triss—having successfully completed Secondary Quest: Now or Never—the king turns his attention to nonhumans instead. But sorcery is safe. For now…
On Stakes in the Square: With Radovid’s purge of the mages left unstopped by you or Triss—having ignored Secondary Quest: Now or Never—the king and his witch hunters turned Novigrad into a death trap for those of a magical disposition.