Siyun

Full/Birth Name:: Yoon Siyun
Korean Name:: 윤시윤
Group:: AMPERS&ONE
Position:: Vocalist
Birthday:: Jan 8, 2005 (21 years old)
Height:: 180 cm (5ft 11in)
MBTI:: ISTJ
Origin:: South Korea
Bio:: Siyun is a vocalist in AMPERS&ONE, born in Incheon, South Korea, and a former contestant on Treasure Box.