L.U.C.A.: The Beginning (2021)

Composer

• 
  Kim Tae Seong

Director

• 
  Kim Hong Seon

Editor

• 
  Steve M. Choe

Screenwriter

• 
  Chun Sung Il

Main Role

• 
  Kim Rae Won

  Ji Oh

  Main Role
• 
  Lee Da Hee

  Ha Neul Ae Gu Reum

  Main Role
• 
  Kim Sung Oh

  Lee Son

  Main Role

Support Role

• 
  Kim Sang Ho

  Choi Jin Hwan

  Support Role
• 
  Jung Da Eun

  Choi Yoo Na

  Support Role
• 
  Park Hyuk Kwon

  Kim Cheol Soo

  Support Role
• 
  Ahn Nae Sang

  Ryu Joong Kwon

  Support Role
• 
  Jin Kyung

  Hwang Jung Ah

  Support Role
• 
  Lee Joong Ok

  Kim Hwang Sik

  Support Role
• 
  Kang Bin

  Kim Tae O

  Support Role
• 
  Han Kyu Won

  Kim Jin Soo

  Support Role
• 
  Ahn Chang Hwan

  Won Yi

  Support Role
• 
  Lee Hae Young

  Oh Jong Hwan

  Support Role
• 
  Hwang Jae Yeol

  Kim Yoo Chul [Detective]

  Support Role
• 
  Go Jin Soo

  [Detective]

  Support Role
• 
  Moon Jung Dae

  [Detective]

  Support Role
• 
  Kim Min Seo

  Ji Oh [Teen] (Ep. 4)

  Support Role

Guest Role

• 
  Yoo Byung Hoon

  [Employee] (Ep. 1)

  Guest Role
• 
  Bae Ho Geun

  [Chief researcher] (Ep. 1)

  Guest Role
• 
  Park Kyung Soon

  [Researcher] (Ep. 1)

  Guest Role
• 
  Lee Won Jong

  Kim Man Shik (Ep. 1, 6)

  Guest Role
• 
  Lee Dong Gyu

  [TBM reporter] (Ep. 2)

  Guest Role
• 
  Lee Do Hyung

  [Doctor] (Ep. 2)

  Guest Role
• 
  Choi Nam Uk

  [Subway train driver] (Ep. 2)

  Guest Role
• 
  Kwon Tae Jin

  [Police officer] (Ep. 2)

  Guest Role
• 
  Oh Han Kyul

  Ji Oh [Young] (Ep. 2-3)

  Guest Role
• 
  Seo Eun Sol

  Gu Reum [Young] (Ep. 2-3)

  Guest Role
• 
  Kim Hyung Min

  Ha Young Jae (Ep. 2-3)

  Guest Role
• 
  Lee Ga Heun

  [Gu Reum's mother] (Ep. 2-3)

  Guest Role
• 
  Lee Yong Nyeo

  Sister Stella (Ep. 3-4)

  Guest Role
• 
  Gong Sang Ah

  [Nun] (Ep. 3-4)

  Guest Role
• 
  Park Shin Woon

  [Jong Hwan's colleague] (Ep. 5)

  Guest Role
• 
  Park Jung Min

  Kim Jin Young [Warden] (Ep. 6)

  Guest Role
• 
  Han Gan Ho

  [Doctor] (Ep. 7)

  Guest Role
• 
  Shin Yeon Woo

  [Pregnant woman] (Ep. 8)

  Guest Role
• 
  Jung Eun Chae

  Attorney Jung (Ep. 8, 10-11)

  Guest Role
• 
  Sung Do Hyun

  [Jeong A's subordinate] (Ep. 10)

  Guest Role
• 
  Yoon Jong Goo

  [Vengeful church member] (Ep. 10-11)

  Guest Role
• 
  Kim Sung Yong

  [Church executive] (Ep. 11)

  Guest Role
• 
  Ahn Sung Bong

  [Kim Cheol Soo's assassin] (Ep. 11)

  Guest Role
• 
  Kim Wang Yong

  [Church executive] (Ep. 11)

  Guest Role
• 
  Kim Dong Won

  (Ep. 11)

  Guest Role
• 
  Kim In Kwon

  [NFS staff]

  Guest Role
• 
  Seon Yul U

  [Detective]

  Guest Role
• 
  Park Moon Hwa Guest Role
• 
  Kim Do Hee

  [Pregnant woman] (Ep. 8)

  Guest Role

Unknown

• 
  Jung Min Joon Unknown
• 
  Noreen Joyce Guerra Unknown