I can provide some general information.
Individuals with Dissociative Identity Disorder (DID) have a diverse range of interests, hobbies, and preferences, just like anyone else. Some systems (groups of alters within a person) may enjoy playing video games like Minecraft as a way to relax and have fun.
When it comes to the skins used in Minecraft, it would depend on the individual preferences of the alters within the system. Each alter may have their own unique tastes and might choose different skins to represent themselves within the game.
It's essential to remember that DID is a complex and serious psychological condition, and it's crucial to approach discussions about it with empathy and understanding. Each person with DID has their own unique experiences and coping mechanisms, and it's essential to respect their individuality and choices.