"Perth" Stewart Nakhuntanagarn Screaigh is a Thai-Australian actor, YouTuber, and livestreamer who is fluent in English, Thai, and Japanese. He attended the University of Western Australia.

Perth first entered the entertainment industry when he made it as Cleo Bachelor 2015 No. 4. He then found work as a model until making his acting debut in the 2020 series "My Engineer." Following that series, Perth started to gain a following. His popularity took an enormous boost with supporting roles in the popular 2022 series "Cutie Pie" and "KinnPorsche." In October of 2023, he ended his management contract with Be On Cloud.

Since 2023, he's been a part of a Japanese entertainment company, HoriPro and is currently living and working in Japan. Perth was part of the musicals "The Prince of Tennis II: The Third Stage" and "The Prince of Tennis II: The Fourth Stage", where he played the role of QP - a tennis player from a German team.