Naoya "Earring" Toudou is a second-year student at St. Heremelin Academy in Lunarvale, Japan. He's a generally seldom-heard, but he's a hot headed leader when the time calls. His life re-began the day he and his friends attempted the "Persona Game", where they ask a "Persona spirit" to arise. Little to their beliefs, the Personae do appear when needed. However, only Naoya is able to summon multiple Personas, which aids him in the group's quest to defeat the evil SEBEC Corporation, and Nyarlathotep, demon lord. 

 

Naoya has a dead twin, and he appears as his shadow, which Nayoa, unfortunatley, has to try to overcome.

 

Through this, it's highly possible he's become the most powerful of all Persona-Users.