• 
  Sung Ha Jo

   Im Tae-ho
• 
  Man-shik Jeong

   Jung Soo-hyuk
• 
  Shi-hoo Park

   Baek Shi-yoon
• 
  Seok-Hwan An

  2 episodes, 2016
• 
  Sun-Cheon Park

  Joo Hee (Shi Yoon's Mother)
• 
  Tae-young Yoon

   Yoon Sang-min
• 
  Yuri Kwon

   Bae Jung-yeon
• 
  Soo-hyuk Lee

   Choi Chan-gyoo

• 
  Jae-ho Song

   President Hwang (2 episodes, 2016)
• 
  Yun-so Choi

   Kim Seo Ahn (2 episodes, 2016)
• 
  Suk-hwan Ahn

   Park Sun Hoo (2 episodes, 2016)
• 
  Kyeong Jin

   Seon Yeong (2 episodes, 2016)
• 
  Bo-mi Kim

   So Mi (2 episodes, 2016)
• 
  Park Soon Chun

   Joo Hee (Shi Yoon's Mother) (2 episodes, 2016)
• 
  Il-jo Ji

   Jong Ji Woo (2 episodes, 2016)

• 
  Son-won Lee

   Han Jun Hee (2 episodes, 2016)
• 
  Chul-min Lee

   Jo Bong Chul (2 episodes, 2016)
• 
  So-Yeon Ji

   Lawyer Ye Jun (2 episodes, 2016)
• 
  Hye In Yoo

   Soo Bin (2 episodes, 2016)
• 
  Kyung-hun Kang

   Kang Ri Soo (2 episodes, 2016)
• 
  Han Bi Ryu

   Da Bin (2 episodes, 2016)
• 
  Kyung-hun Kang

   Kang Ri Soo (2 episodes, 2016)
• 
  Cheol-min Lee

   Jo Bong Chul
• 
  Jeong-Hun Han

  Han Gyul
• 
  Marie Marolle

  Li Wei