ONEUS (원어스) is six-member boy group under RBW. They officially debuted on January 9, 2019, with their first mini album Light Us.
- Ravn (레이븐) - Main Rapper, Vocalist, Producer
- Seoho (서호) - Main Vocalist
- Leedo (건학) - Main Rapper, Dancer, Vocalist
- Keonhee (건희) - Main Vocalist
- Hwanwoong (환웅) - Main Dancer, Vocalist, Sub-Rapper
- Xion (시온) - Vocalist, Visual
- Light Us (2019)
- Masterpiece (2019)
- Keonhee, Hwanwoong and Seoho are former participants of Produce 101 Season 2.
- Seoho and Ravn are former participants of MIXNINE.