Delinquent Hair

Anime & Manga

 * Makoto Kino of Sailor Moon isn't actually a delinquent, but her tall height, strength, long-skirted school uniform, and naturally curly light brown hair all make her fellow students perceive her as this.

Western Animation

 * Total Drama's Duncan sports a green mohawk.
 * Tambry from Gravity Falls has pink and purple hair. It's been like this since she was in Kindergarten.