Kakkou

is a Jonin from Iwagakure in the Naruto series.

Kakashi Gaiden
Kakkou served during Third Shinobi War as a scout for the Rock team, who invaded the Grass Country. He and Taiseki scouted Team Minato. They kidnapped Rin, and ran off. They both used Genjutsu to interrogate her. When Kakashi Hatake and Obito Uchiha attacks Kakkou, he uses jutsu to make the cave collapse, crushing Obito. It's rather unknown if he was killed by Kakashi with Chidori or killed by Minato when he arrived for help since Kakashi fainted when using the Chidori.