Lee Hwi Chan, formerly known as Raychan, is a South Korean singer, dancer, former member of LIMITLESS and current member of OMEGA X.

He made his debut in July 2019 (under the stage name Raychan) as LIMITLESS's main vocalist with their first digital single, "Dream Play". Unfortunately, their agency, ONO Entertainment faced financial issues and the group went into an indefinite hiatus in mid-2020. While no official statement has ever been given, it is assumed they have quietly disbanded.

After switching agencies, he re-debuted in July 2021 (using his real name) 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.