ONEWE (원위), formerly known as MAS (마스) and M.A.S 0094 (마스 공공구사), is a five-member boy band currently signed under RBW and CloudR. They released their first single "Butterfly, Searching for Flowers" on August 15, 2015 before officially debuting on August 2, 2016 on SBS MTV's The Show.
In May 2017, the group was transferred to RBW and renamed to simply MAS. In June 2018, their name was changed again to ONEWE and will re-debut sometime in 2018.
Their previous name was an acronym for 'Make A Sound' and the number 0094 signifying the birth years of the youngest and oldest members. MAS participated in the reality television series The Unit during October 2017. On the 7th episode, Harin (52nd), Younghoon (58th), Cya (59th) and Kanghyun (61st) were eliminated. Dongmyeong made it to the finale where he was later eliminated (15th).