Elenco - Stress Zero
Im Chae-Heon
Jjang-dol (voice)
Yoo Dong-kyun
Dr. Ko (voice) / Junsu Han (voice)
Kim Seung-tae
Ta-jo (voice) / Chief Secretary (voice)Kim Sara
Hong Jin-yi (voice)Kim Young-jin-III
Heejang Jeon (voice) / General (voice)Jeon Sook-kyung
Han Sook-hee (voice) / Jang Young-min (voice)