The Raven is a mysterious entity. Although he defines himself as a neutral individual when it comes to Nevermore Academy and Lenore, he has given important information and diverse advices in response to her questions, implying that he could be helpful even if he isn't fully Lenore's ally.

Additionally, he serves as the story's narrator from time to time. He seems to work for the Deans and absolutely despises doing so. His personality is independent, sarcastic and on occasions cocky.

I imagine he sounds like the Cheshire Cat voiced by Stephen Fry or like the black cat from Coraline.