Abby and Romanse

Abby is a member of the K-pop group "Saja Boys" and is approximately 400 years old. He is described as the "eye-candy" of the group. His nickname, "Ebs," is derived from his fit and athletic physique. As the tallest member of "Saja Boys," Abby is also the most athletic and muscular in the group, with the infamous "six-pack" abs that match his nickname. His hair is short and styled, with a deep, almost magenta-pink hue. His skin is light with a slight tan. His clothing is usually tight-fitting, designed to showcase his figure, which he often flaunts. In his demonic form, he has yellow eyes and slightly purple skin, with purple demonic markings all over his body, resembling lightning patterns, similar to the rest of the group. Abby appears to be the most confident member of the "Saja Boys." He is skilled in both choreography and vocals, with a solo dance part in "Soda Pop" and an opening vocal in "Your Idol." He is portrayed as a vain individual who enjoys showcasing his attractiveness and physical fitness.

Romance is a member of the K-pop group "Saja Boys." Like the rest of the group, he is a demon who pretends to be a K-pop idol. Romance has a slim and toned physique with long limbs. His most prominent feature is his medium-length pink hair, which is styled in a cascading fashion. He has a slightly angular face and large pink eyes, often with a blush on his cheeks and light eye makeup. In his demonic form, most of his features remain, but notable changes include glowing yellow eyes, pale blue skin, clawed hands, and demonic markings resembling lightning patterns all over his body. Romance is portrayed as a soft-hearted and flirtatious member of the Saja Boys. On stage, he enhances his charming persona by frequently adopting passionate poses and expressions. However, he maintains a relaxed demeanor. Despite his outward charisma, Romance maintains an immoral, demonic mindset, willingly serving Gui-Ma and assisting Jin in his plan to steal people's souls. However, when Gui-Ma is destroyed, he continues to live a human life just as calmly as the other members of the group.

There are five participants in the K-POP group. Jinu – Group leader and chief vocalist, Abby – Leading choreographer, Mystery – Reper and composer, Baby – reper, Romanse.