Yang Hyuk, formerly known as Gun, is a South Korean singer, dancer, former member of ENOi and current member of OMEGA X.

He made his debut in April 2019 (under the stage name Gun) as ENOi's lead rapper, sub-vocalist, visual and maknae with their first single, "Bloom". The group struggled to promote and the members had different ideas of what type of music they should be releasing. So, in January 2021, Kithewhale Entertainment announced the group's disbandment. Four members remained with the company but he decided to leave.

After switching agencies, he re-debuted in July 2021 (under the stage name Hyuk) as a member of OMEGA X with their first single album, "Vamos". However, in October 2022, a video of the CEO of OMEGA X's label (Spire Entertainment) abusing him and his group members came to light. The members filed a lawsuit against their company to cancel their exclusive contracts and to file for the trademark of their group name. In January 2023, OMEGA X won the lawsuit and officially ended their contract with the agency. This was finally made official on May 8, 2023. The group is has been represented by IPQ since July 2023.