"Open the Gate KINGDOM! Hello, I'm Arthur!"
Jang Yun-ho (장윤호), also known as Arthur, is a South Korean singer under GF Entertainment. He first debuted in 2017 as a member of the boy group Varsity. After Varsity's disbandment in 2020, he continued to train under a different agency. In 2021, he debuted once again, this time as a member of the boy group Kingdom.
He officially made his debut as a member of VARSITY on January 9, 2017 with the single "Round One".
Arthur debuted as a member of KINGDOM on February 18, 2021 with their mini album History of Kingdom : PartⅠ. Arthur.
Within the group Kingdom, he represents the Kingdom of Rain.