Tokubetsu Jōnin

are ninja who, rather than having all-around jōnin skills, only excel in a specific area, much like warrant officers in real-world militaries. For example, Ibiki Morino can completely understand the workings of the human mind, making him an expert in interrogation. They are elite specialists in their areas and have enough skill to be responsible for leading their own genin teams.

Trivia

 * In Naruto: Rise of a Ninja, tokubetsu jōnin are called elite shinobi.