Nicole is an alter ego of Nicki Minaj who appeared for the first time in an interview between her and Nicki. She is portrayed as a very sweet and girly interviewer with a valley girl accent.
Ever since Nicole's first appearance, Nicki has been sporting the infamous Nicole wigs in videos such as "I'm Out", "Love More", My N***a Remix and "High School". It's rumored that Nicki was wearing the Nicole wig in the music video for Side To Side. Some Barbz/Kenz/Boyz believe Nicole is an alter ego Minaj portrayed in 2013. She has been mentioned in Rake It Up. It is likely that Minaj stopped using her.