Katasuke Tōno

is a jōnin from Konohagakure who appears in Boruto: Naruto the Movie. He works for Konoha's.

Appearance
Katasuke has a short crop of brown hair and brown eyes. He also wears a pair of glasses.

Boruto: Naruto The Movie
Katasuke works as a scientist for Konoha's Ninja Weapons Team and he invents a forearm device that stores and releases ninjutsu techniques as the user's will. He wanted to introduce it at the Chūnin Exams but Naruto Uzumaki considered it to be a form of cheating and forbade it. However, unbeknowst to Naruto, Kakasuke introduces the device to Boruto Uzumaki, who uses it during the Chūnin Exams. Once Naruto discovers this and disqualifies Boruto for cheating, Kaksuke tries to announce to the audience that there was no point in using traditional ninjutsu techniques due to how far advanced their technology is before Momoshiki and Kinshiki attacked the arena. Kakasuke joined the rescue mission to rescue Naruto from the two enemies and attempted to use the device on Momoshiki, who absorbed all his attacks and this increased his strength.