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 nevertheless possess enough skill overall, as they are known to have been given the same opportunity as jōnin in leading their own genin teams.

Trivia

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