Onew (온유) is a South Korean singer, lyricist and actor under GRIFFIN Entertainment. He is the leader of the boy group SHINee. He made his solo debut on December 5, 2018 with his first mini album Voice.Onew (온유) is a South Korean singer, lyricist and actor under GRIFFIN Entertainment. He is the leader of the boy group SHINee. He made his solo debut on December 5, 2018 with his first mini album Voice.