Master Nyada in Yo-kai Watch 2

Master Nyada appears in Chapter 10. Nate/Katie and their friends have to look at them in order to train under him to defeat the Wicked. He is found in the Shopper's Row in the past while watching Moximous Mask's TV show. He has three requests ("Nyada's Trials Part IV", "Nyada's Trials Part V", and "Nyada's Trials Part VI") which should be cleared in order to progress into the chapter. He gives the "Hose" (which is a normal hose...) after clearing his request.

In post-game, the player can attempt to befriend Master Nyada in Nyada's Trials Part III. He is able to be battled once per day until he's befriended through the regular method.