Toad (Scientific Ninja Tool)

These toads are Scientific Ninja Tools created to be used by former Kara Inner, Koji Kashin. They resemble and act like real toads, but are non-sentient recreations that are remotely controlled by Koji's chakra. They are used as surveillance, communication and even as flammable weapons. Koji can also sync with these toads in a remote location to be able to see through them and control their actions. 
Three years after the events leading to Koji defecting Kara and Boruto being forced to flee Konohagakure, the two form a partnership and the latter keeps one of Koji's toads on him in order to communicate with him.