Ash wears a new outfit which is different than his previous outfits. He wears a white and blue striped short sleeved loose collared shirt, brown capris with red outlines with baggy pockets and red folded sleeves at the edge of his capris and shades of blue sneakers. His hat is red and black and the Poké Ball design is white and wears a silver Z-Ring on his left wrist.
Since entering the Alola region Ash is shown to be far more enthusiastic than he did in the Kalos region, while at the same time kept his determination and his love for Pokemon. While Ash does retain his competence and experience, not getting upset over losing the Trial Challenges and defeating multiple Pokemon at the same time, but displays a considerably more childish and hyperactive demeanor.
Ash was given Pikachu by Professor Oak as the original Kanto starter Pokemon had been taken. Originally, Pikachu would not listen to Ash and constantly shocked him. However, after accidentally angering a flock of Spearow, Pikachu had a change of heart when he saw Ash defend him. Since then, Pikachu has assisted and been very successful in many of Ash's wins and over time has adopted Ash's mannerisms. Pikachu does not want to be in his Poké Ball so he stays out all the time, often riding on Ash's shoulder or head.
Rowlet was found by Ash as it was trying to get food for Toucannon. After Ash save it from falling and giving it food, Rowlet grew attached to Ash, even saving Pikachu from Mimikyu. After getting the Toucannon approval, Rowlet decided to join Ash's team, becoming his first Alolan Pokemon.