The Heavenly Idol

The Heavenly Idol is a 2023 South Korean television series starring Kim Min-kyu, Go Bo-gyeol, and Lee Jang-woo. Based on the Munpia and Naver Series web novel of the same name by Mythology Jin (Shin Hwa-jin), it aired from February 15 to March 23, 2023, on tvN's Wednesdays and Thursdays at 22:30 (KST). It is also available for streaming on Viki and Viu in selected regions.

Synopsis
In the supernatural Other World, the Pontifex Rembrary and his troops battle against dark forces in a campaign to thwart the Evil One's return to power after a hundred years. Just as he takes the upper hand in a tough duel against the Evil One, an inexplicable force foils Rembrary's victory and transports him to the present world. He finds himself in the body of a K-pop idol named Woo Yeon-woo, a member of the boy group Wild Animal. The true Yeon-woo has been transported to the Other World in Rembrary's body. Naive of the workings of the present world, Rembrary struggles to live as a K-pop idol while finding a way to return to the Other World in order to restore himself and Yeon-woo to their original bodies and save the two worlds from the Evil One.

Main

 * Kim Min-kyu as Rembrary / Woo Yeon-woo
 * 1) Rembrary: a Pontifex (Daesin-gwan) from the Other World who is suddenly transported to the present world, waking up in the body of the K-pop idol Woo Yeon-woo. The 23rd Pontifex serving the deity Redrin, Rembrary is known for his dashing looks, strong morality and his compassion for the people of the Other World. He possesses divine powers that he uses in fighting against dark forces. While battling against the Evil One, he is inexplicably transported to the present world and finds himself in Yeon-woo's body. He then struggles to live as a K-pop idol while finding a way to return to the Other World and save the people from the Evil One's potential return to power.
 * 2) Woo Yeon-woo: the main rapper and sub-vocalist of the K-pop boy group Wild Animal under LLL Entertainment. After originally auditioning as an aspiring actor, Yeon-woo debuted five years ago as a K-pop idol at the recommendation of the CEO who admired his handsome looks. Whilst being an idol, he did not give up on his dream to become an actor. Minutes before a live music show broadcast, he is suddenly transported to the Other World and finds himself in Rembrary's body.
 * Go Bo-gyeol as Kim Dal
 * Wild Animal's new talent manager and a big fan of Woo Yeon-woo. A former talent manager for a K-pop girl group, Dal slumped into depression after one of the group's members committed suicide. Finding new hope from fangirling for Woo Yeon-woo, she ultimately decides to apply as Wild Animal's new manager and help them attain stardom. Unbelieving at first, she later becomes one of the very few people aware of Rembrary's true identity.


 * Lee Jang-woo as the Evil One (Mawang) / Shin Jo-woon
 * The King of Evil of the Other World and Rembrary's archenemy. After a hundred years of dormancy, the Evil One threatens to regain supreme power over the Other World. He pursues Rembrary across dimensions and manifests himself in the present world as Shin Jo-woon, the vice chairman of RU E&M, an entertainment company. He uses his black magic to trigger or aggravate his victim's inner evils and darkness to turn them into his minions against their will.

People in the LLL Entertainment

 * Ye Ji-won as Im Sun-ja
 * CEO of LLL Entertainment, the agency of the K-pop boy group Wild Animal; Sun Woo-sil's ex-girlfriend.


 * Hong Seung-beom as Choi Jeong-seo
 * The leader and sub-rapper of Wild Animal.


 * Shin Myung-seung as Hwang Tae-in
 * The main vocalist of Wild Animal.


 * Choi Jae-hyun as Kasy
 * The lead vocalist of Wild Animal.


 * Shin Kyu-hyeon as Cha Hae-gyeol
 * The youngest member and main dancer of Wild Animal.

People in the Entertainment Industry

 * Tak Jae-hoon as Sun Woo-sil
 * A senior artist who hates Woo Yeon-woo; CEO Im's ex-boyfriend.


 * Lee Dal as Kim Moo-rok
 * A popular television producer, known for his "evil editing" (angma-ui pyeonjip) and producing TV shows with high viewership ratings.


 * Oh Jin-seok as Oh Jung-shin
 * The youngest member of the boy group AX.


 * Kim Seo-ha as Maeng Woo-shin
 * A famous actor who is a member of a secretive all-celebrity religious cult called Hongwoodaedae.

Members of Evil Boys
Evil Boys is a K-pop boy group whose members turned into malevolent yogoe (goblin). Once a struggling group like Wild Animals, the band unknowingly bargained their souls with Hongwoodaedae's leader in return for their success and popularity, but the deal caused their gradual transformation into yogoe.
 * Jung Su-hyeon as Raken
 * The leader of the boy group Evil Boys and a fully transformed yogoe.


 * Wonjun as Typhon
 * The youngest member of Evil Boys. Gradually transforming into a yogoe, Typhon has become terrified of what the group has become.


 * Lee Woo-tae as Vasily
 * The main dancer of the Evil Boys.

Beings in the Afterlife

 * Jang Young-nam as Yeomra
 * The present world's deity of the afterlife who rules and oversees the fate of humans.


 * Park Sang-nam as Sa Gam-jae
 * A grim reaper sent to the mortal realm to inspect suspicious events involving Rembrary and other beings from the Other World; Wild Animal's new road manager.

Beings from the Other World

 * Cha Joo-young as Redrin
 * The deity who is the creator of the Other World. Redrin appears like a young adult woman and keeps the boundary between the underworld and the present world.

Others

 * Baek Seo-bin as Chief Jang
 * Ryu Seung-moo as a hwansin
 * a mysterious being who is targeting Rembrary for another purpose while serving the Evil One. Existing in both present world and the Other World, a hwansin is a former human who lost his or her physical body after contracting a deal with an evil being.

Special appearances

 * Nature as the popular girl group Queen Crush
 * E'Last
 * Ahn Se-ha as Wild Animal's ex-manager
 * Jonghyeong and Mingyu as member of the group Nine to Six
 * Lee Sun-bin as acting trainer