A hugely popular rock star, Nikki tours the world (well, El Nido) to entertain. His fame it witnessed by the innumerable posters adorning walls and buildings in Another World's Termina. Nikki, along with Miki and the rest of his group, make up the Magical Dreamers. He'll help you get into Viper Manor early in the game, and also will play a large role later on.

Recruitment
Nikki will join you early on, if you choose to have him guide you to Viper Manor (Your other choices are Guile and Pierre; note you can only get one of the 3 in each play-through of the game)