• 
  Ji-Hyun Park

  32 episodes, 2018
• 
  Kim Yeo-jin

  Shim Eun-ha
• 
  Ji-seob So

   Kim Bon
• 
  In-seon Jeong

   Go Ae-rin
• 
  Ho Joon Son

   Jin Young-tae
• 
  Se-mi Im

   Yoo Ji-yeon
• 
  Ki-Young Kang

   Kim Sang-ryeol
• 
  Jung Shi Ah

  8 episodes, 2018

• 
  Jasper Cho

  5 episodes, 2018
• 
  Sung-joo Kim

  8 episodes, 2018
• 
  Gyu-ri Nam

  2 episodes, 2018
• 
  Kim Byung-Ok

  2 episodes, 2018
• 
  Semi Lim

  Yoo Ji-Yeon
• 
  Ye-Rin Ok

  Cha Joon-Hee
• 
  Si-a Jeong

  Bong Sun Mi

• 
  Sang-Hyun Yoon

  Doctor Yoo
• 
  Dan Bradford

  Russian Politician
• 
  Andreas Fronk

  Mercenary
• 
  Najib Razak

  Self
• 
  Lee Joo Won

  Jo Seung Hyun [Eun Ha's son]