What is Delinquent manga?

Delinquents - Every school has them, but not all anime with school setting make delinquents a central topic. There are several versions of these delinquents, though some are grounded on a misunderstanding: * The student with a really bad image and attitude, based on his real criminal actions outside of the school and is even feared by teachers. * The primitive "class bully" that pushes around ("clobbers") his classmates for no apparent reason, possibly extorting lunch money. * The student with an sinister complexion or "evil eye", but is actually a "good" student (unfoundedly feared character). * The rebellious student, who does not care for studying, but is otherwise docile. Called a "delinquent" as a joke.