(I don't own this picture. All Rights go to the owners.)

Name: Neo
Age: Same age as Tsukune
Gender: Male
Species: Siren
Personality: Kind to people he likes, cruel to people he doesn't like, handsome, silent sometimes, mysterious sometimes, shy sometimes, caring to people he likes, protective, helpful, brave, strong, serious sometimes, smart
Appearance: Short green hair, orange and light blue color eyes and wears a Yōkai Academy school uniform.
Family: Unnamed parents (Deceased), Ginei (Adoptive Brother)
Friends: Rosario Vampire Allies
Enemies: Bullies
Sexuality: Bisexual
Crush: Open
Others: Protective of his friends. Sometimes uses his sketch book to communicate. Member of the Newspaper Club.

Sounds like Yu Narukami from Persona 4