Priest (TV series)

A story about doctors and exorcists protecting people together at a Catholic hospital in Seoul.

• Yeon Woo-jin as Oh Soo-min

A dutiful and reckless Catholic priest who is a member of 634 Regia. Twenty years prior to the series, Soo-min and his father, along with priest Moon Ki-seon, witnessed the death of his mother at a young age, where she was possessed and killed by a demon due to his father's refusal to believe in exorcism preventing her from receiving one. Under priest Moon's tutelage, he becomes an exorcist.

• Jeong Yu-mi as Ham Eun-ho

A doctor at Southern Catholic Hospital who lost her faith in God at a young age when her parents died in front of her in an accident, she first encountered Soo-min when her most recent patient turns out to be possessed by an evil entity. Witnessing the exorcisms of both the patient and the subsequent possession of a colleague by the same entity caused her to rethink her beliefs.

• Park Yong-woo as Moon Ki-seon

A senior Catholic priest who founded 634 Regia, a group of priests that performs exorcisms unofficially while still recognized by the Vatican. When he was younger, he was called upon by Soo-min to save his mother but was too late. He was the one who takes Soo-min under his wing and taught him how to conduct exorcisms.

• Son Jong-hak as Koo Do-hyun
• Oh Yeon-ah as Shin Mi-yeon^[3]
• Yu Bee as Jung Yong-pil
• Lee Gun-myung as Lee Ki-hong^[4]
• Lee Eun-saem as Chae Yi-soo
• Jang Won-hyung as Jang Won-seok^[5]
• Cha Min-ji as Jang Kyung-ran
• Moon Sook as Go Mi-sook
• Kang Kyung-hun as Cha Sun-young
• Jang Hee-ryung as Kim Yoo-ri

Priest reunites Yeon Woo-jin and Jeong Yu-mi who previously starred together in The Tunnel (2014).^[6]

The lead male role was first offered to Lee Je-hoon but he declined.^[7]