Shonen-Doll is a young boy who dwells in Mobius' enormous library, choosing to competely isolate himself from the outside world.

He always wears a low-hanging hood that obscures his face and hides his expressions.

Sneering at the masses, he writes gloomy, violent songs that attack people with social lives, who he interprets as weak for having to work in a flock in order to accomplish anything worthwhile.

He engages a lot of difficult concepts in his work and has a strong group of fanatical devotees who tend to embrace solitude and individuality and see his music as salvation.