These massages increase your Pokémon's happiness and you can give one a day In the Pokémon Gym street of Castelia City, when you enter the building opposite to the Gym, you will find a character who will give your Pokémon massages. Pokémon captured and labelled as N's Pokémon also cannot be named Pokémon obtained in trades cannot have their names changed. Like the Name Rater of the previous games, he will only change the names of Pokémon you have captured.
In the Pokémon Gym road of Castelia City, there is a man in the lefthand building who will change your Pokémon's name. Like with Pokémon's previous iterations, this game has numerous important people throughout the game who will aid you on your journey.