Stage Name: Seongwoo (성우)
Birth Name: Ong Seong-woo (옹성우)
Position: Main Dancer, Lead Vocalist
Birthday: August 25, 1995
Zodiac Sign: Virgo
Nationality: Korean
Height: 179 cm (5’10″)
Weight: 63 kg (139 lbs)
Blood Type: A
Sub-Unit: The Heal
Instagram: @osw_onge
Official Fandom Name: WELO
Official Fan Colors: –
