I have a theory. He calls Yve (the puppet on top of the roses) his *daughter* probably because she *WAS* his daughter before she died. A phrase that confirms this is how he calls himself *father* every time he refers to himself to her, and also "I've lost you again...", which confirms that she once *was with him* , probably while she was alive. It can be confirmed *even more* with the things he destroys, which symbolize what he was trying to immortalize from her in the puppet world. Examples: The painting of the two together, which is later destroyed, becomes black and white, which must symbolize mourning, with him *alone*. The shelf that after being broken instead of having books has *Yve's painting with candles and roses*, things that are usually left in tombs to honor the dead person. The boss fight can symbolize an *argument or fight*, in this case with Vivette (who we can believe is his wife), who is trying to convince him that this is over, that she is dead and there is no going back. At the end of the bossfight it can be interpreted as the last stage of grief (Acceptance) and him moving on. Maybe Vivette *is also dead* because that blue thing that appears to be her spirit is commanding her. One thing that could also symbolize this is having a reference about her in the room that appears to be Yve's, which even Tex commented on. The world of puppets would simply be a "therapeutic" way to deal with the loss of both of them. I can't say much about the other two characters who try to attack Vivette. But Jean Pierre should just be a character made for his normal performances. Thank you for wasting some of your time reading you, I hope you have an amazing day! ❤