Kotaro's father. Toubei is a descendant of Ninja, and is a master of Ninja Doujou. but, the pupil does never come. His staying away from the house for training is frequent. a only person from whom he knows real nature of Ganbar Team. He does an antique character, and is childish and pure. He has ability as he can fight against an enemy on equal terms. however, he is changed into the dog by Yaminorius. He was named Gonzales by distinguished services that helped Kasumi and is became the pet of the Kirigakure family. He can talk as well as before, and he can't speak dog word.