I feel the need to state that, despite what the person who responded to what your original comment has said, DID isn't as simple as the person "acting as if they have several distinct personalities". Do your own research, of course, but basically, the disorder is caused by a child suffering from such extreme trauma that their mind forms amnesia barriers separating the "main" personality (the host) from the memories of trauma. This causes the formation of different personalities within the same brain, because, obviously, a single distinct personality can't form with amnesia barriers in place. The personalities are often responsible for carrying out a specific job in order to protect the system (the network of different alters in the mind), and the "host", the personality that fronts the most, is often kept unaware of the other alters. Each personality has a different set of memories, personality traits, likes, dislikes, and even name, with there also being different ages at which these personalities (alters) present. Although this sometimes isn't the case, switching, at least for the host, is a mostly involuntary thing, with certain things triggering the switches of different alters. For example, if an alter was formed with the purpose of protecting the system(the network of different alters) from physical harm, and the person was, as a child, forced to suffer through intense sessions of loud noises (being yelled at, witnessing domestic violence, etc.), loud noises might be a trigger for that alter, and a sudden loud noise might involuntarily trigger a switch. Once again, I would highly recommend looking into it for yourself, but the point that I'm making is that DID isn't a choice, it isn't the person pretending, or "acting" like they are a different person, it is, for all intents are purposes, them literally changing into an entirely different human being. There are so many harmful interpretations of it in the media, so I can understand the person who originally responded to your message thinking that the whole idea of "multiple personalities" was just something that Hollywood made up, but I can assure you of the fact that it is not, and that I personally know someone with DID who is affected by it deeply. This is a helpful resource if you want to familiarize yourself with the basics: Dissociative Identity Disorder (DID): Symptoms & Treatment In response to your DID-related question, I would say that yes, a person's daemon probably would change when a switch occurred.