Most others are just pointless and outright useless, Nicki Minaj and her Roman Zolanski move. Apparently i wasn't listening to Nicki Minaj on Bottoms Up, that was Roman Zolanski..im sorry onika barbie harajuku or whatever else she's called nowadays.
second self, a second personality or persona within a person, who is often oblivious to the persona's actions (Wiki). Maybe these artists don't feel talented enough or beleive in their first person based on experiences maybe childhood trauma or whatever. Regular folk also come up with alters in dealing with their everyday life. Think of your alter ego as the stage name for your life. There's the 'part of you' that does certain things and the other evil side of you. I guess alters are ok then, even though it is a trait of people with Dissociative Identity Disorder, but who am I - the music industry nowadays promotes all things evil and vile as good. Gaga says it's cool to poison your boyfriend in her videos and Rihanna says go on and play Roulette with your life. Ahh the things we do for money.