Because you like Emily Prentiss in Criminal Minds

Yukiteru is a reclusive observer who would rather watch life go by than participate in it. See them in The Future Diary.

Tidus is upbeat, carefree, and desperate not to become his father. See them in Final Fantasy Series.

Hotheaded and arrogant, Kaneda is nevertheless fiercely protective of the biker gang he leads. See them in Akira.

Convinced that the world is conspiring against him, Tatsuhiro's reconciled himself to his fate as a shut-in. See them in Welcome to the NHK.

For somebody who won't answer questions, the enigmatic C.C. sure asks a lot of them. See them in Code Geass.