"ONE US! Hello, I'm Hwanwoong! Yeo Hwanwoong (여환웅) ranked 42nd upon joining MNET's survival show "Produce 101". Despite of getting eliminated, Hwanwoong debuted as the Main Dancer and Vocalist of the group ONEUS under RBW Entertainment. Even if he's known or being ONEUS' Dancing Machine, Hwanwoong can also play the Guitar.