Lee Joo-heon, better known by the stage name Joohoney and formerly mononymously known as Jooheon, is a South Korean rapper, singer, songwriter, and producer. He is a member of the South Korean boy group Monsta X, which formed through the Mnet's survival show No.Mercy, under Starship Entertainment in 2015. He also made his solo debut with the EP Lights in 2023.

Jung San, more commonly known by his stage name San E (Korean: 산이), is a South Korean rapper. He debuted in 2010 under JYP Entertainment, where he was the label's first solo rapper. He left the company in 2013 to sign with hip hop label Brand New Music. He left the company in 2018 and established hip hop label FameUs Entertainment in 2019.