Real name is Heo Seung. He is blunt but has a tsundere side. His way of speaking is stiff and formal. He is a rapper under Indigo Music. He smokes frequently. He is the most skilled rapper among the group. He doesn't usually swear, but when he does, he goes all out. He holds high status in the hip-hop scene. He is the oldest member of Indigo Music.

Real name Choi Won-jae. He jokes around a lot. He rarely swears. He knows how to produce beats. He is a rapper under Indigo Music. He is a very stylish dresser. He is the second oldest after Young B.

His rap name is Young B. He prefers to be called Yang Hong-won rather than Young B now. He is foul-mouthed, swears a lot, and has a rude attitude. He is a rapper under Indigo Music. He knows how to produce beats and smokes frequently. He has a relatively deep voice. Winner of High School Rapper. He is the next oldest after Noel.

Kim Sang-min. Born June 20, 2004. 21 years old, male. 185cm, 82kg. He is in great physical shape. He is a rapper under Indigo Music.

Real name is Park Jong-soo. He is a rapper under KC. He has a great sense of fashion. He often wears sunglasses. Runner-up of Show Me The Money 12. 181cm. He has a slender build.