Best Celebrity Alter Egos These days, celebrities are making a name for their alter egos. Lady Gaga recently appeared at the VMAs as her masculine counterpart, Joe Calderone, and Katy Perry's infamous teen dream, Kathy Beth Terry, still reigns supreme on Twitter. Nicki Minaj will share her new album with doppleganger Roman, and Justin Bieber created MC Shawty Mane to express his swag.