As indicated from the minigame towards the end of FNAF 6 (Pizzeria Simulator), four of the six souls were set free when Micheal set Fazbear Frights on fire. The two remainings, who failed to be pleased with the outcome, were the Puppet and Evan (now being the sole inhabitor of Golden Freddy).  While the Puppet still had unfinished business with freeing Charlotte, Evan wanted to make sure his father was gone for good. After all, Evan went through so much worse and harbored greater resentment.