Isao

Character of the day from Ep 89
Mateo and his younger sister Marissa live on Sunburst Island in the Orange Archipelago. Mateo grew up helping his grandfather at his glass shop. After his grandfather's passing, Mateo decided to follow in his footsteps and now operates the old shop. However, he had recently been suffering from artist's block and became increasingly frustrated by his lifeless and lower-quality glass products. One shop owner yelled at Marissa, claiming her brother was ruining the glass business on the island.
(Source: Bulbapedia)