Pop singer who became known as a member of the South Korean boy group, Pentagon formed by Cube Entertainment. They rose to prominence for their self-titled debut mini album Pentagon, including, most notably their hit "Gorilla."
He and his bandmates were formed through the Mnet survival show Pentagon Maker in 2016.
His group's album Pentagon peaked at number seven on the Gaon Album Chart.
He was born Yeo Chang-gu, but is better known by his stage name Yeo One.
He and Ko-Shin-won were both members of the hit boy band Pentagon.