- Lee Jong-suk
- Â Park Hoon 20 episodes, 2014
- Jin Se-yeon
- Â Han Seung-Hee / ... 20 episodes, 2014
- Park Hae-joon
- Â Cha Jin-Soo 20 episodes, 2014
- Chun Ho-jin
- Â Prime Minister Jang Seok-joo 20 episodes, 2014
- Jeong In-gi
- Â Kim Tae-Sool 20 episodes, 2014
- Kim Ji-Eun
- Â Oh Joon-gyoo's assistant 20 episodes, 2014
- Park Hae-jin
- Â Han Jae-Joon 19 episodes, 2014
- Kang So-ra
- Â Oh Soo-Hyun 19 episodes, 2014
- Lee Jae-won
- Â Kim Chi-Gyu 19 episodes, 2014
- Jeon Gook-hwan
- Â Oh Joon-gyu 19 episodes, 2014
- Kim Sang-ho
- Â Yang Jeong-han 19 episodes, 2014
- Choi Jung-woo
- Â Moon Hyung-wook 19 episodes, 2014
- Yoon Bo-ra
- Â Lee Chang-yi 19 episodes, 2014
- Kim Yong-geon
- Â President Hang Chan-Sung 19 episodes, 2014
- Su-Jeong Eom
- Â Min Soo-Ji 19 episodes, 2014
- Han Eun-seon
- Â Eun Min-se 19 episodes, 2014
- David Will No
- Â Dr. Yan 2 episodes, 2014
- Kim Sang-jung
- Â Park Cheol (Park Hoon's father) 2 episodes, 2014
- Kim Ji-young
- Â Jeong-min 1 episode, 2014
- Goo Seung-Hyeon
- Â Park Hoon (young) 1 episode, 2014
