Multiple Personality Disorder More Condition_symptoms If Someone Has Multiple Personality Disorder Can They Legally Get Each Personality A Different Name?

If someone has multiple personality disorder can they legally get each personality a different name? - multiple personality disorder more condition_symptoms

I had a strange idea. What happens if someone has a multiple personality, and every other human feelings in your name or simply wanted a different name than the other personalities? Are you able to legally acquire a new name for himself, or he must remain as his birth name / to be changed for everyone?