Cast 12
Shim Kyu-hyuck
Park Hyung Seok (Small) (voice) (8 episodes)
Han Shin
Park Hyung Seok (Big) (voice) (8 episodes)
Ryu Seung-gone
Lee Jin Seong / Park Jong Gun (voice) (8 episodes)
Jeong Jae-heon
Vasco / CEO / Lee Nam Su (voice) (8 episodes)
Nam Doh-hyeong
Jin Ho Bin / Jang Gi Seok / Kim Mae Sik / Park Bum Jae (voice) (8 episodes)
Hwang Chang-yung
Pyun Deok Hwa / Lee Tae Sung / Oira (voice) (8 episodes)
Sa Moon-young
Park Ha Neul / Female Student / Female Extra (voice) (8 episodes)
Lee Kyung Tae
Park Ji Ho (voice) (8 episodes)
Kim Hyeon-uk
Lee Hyun Do / Go Jeong Gi / Kim Seul Bum (voice) (8 episodes)
Lee Gyu-chang
Na Yu Eop / Park Han Gyul / Homeroom Teacher (voice) (8 episodes)
Bae Jeong-mi
Choi Soo Jeong / Deok Hwa's Grandmother / Female Student (voice) (8 episodes)
Kim Ok-kyung
Hyung Seok's Mom (voice) (8 episodes)
Art 9
Dae Woo Lee
Art Direction (8 episodes)
Pak Tae-jun
Original Series Design (8 episodes)
Jo Byung Hee
Storyboard Artist (1 episode)
Moon Hoo Young
Storyboard Artist (1 episode)
Park Ju Hyeon
Storyboard Artist (1 episode)
Kim Eun Joo
Storyboard Artist (1 episode)
Lee Jae Bum
Storyboard Artist (1 episode)
Kim Joong Cheol
Storyboard Artist (1 episode)
Crew 1
Doo-Hyun Choi
Post-Production Manager (8 episodes)
Directing 3
Kang Hei Chul
Director (5 episodes)
Han Seung Woo
Director (2 episodes)
Park So Young
Director (1 episode)
Production 6
Young-Un Park
Production Manager (8 episodes)
Han Kwang Il
Co-Executive Producer (8 episodes)
Lee Seung Wook
Associate Producer (8 episodes)
Hyun Ku Lee
Producer (8 episodes)
Kohei Obara
Executive Producer (8 episodes)
Lee Young Jin
Casting (8 episodes)
Sound 7
Kim Eun-jung
Sound Effects (8 episodes)Foley (8 episodes)Sound Re-Recording Mixer (8 episodes)
Kim Jae Hyuk
Dialogue Editor (8 episodes)ADR Editor (8 episodes)
Hyun Joon Kim
Foley (8 episodes)Sound Effects (8 episodes)
Han Kyung-Hoon
Original Music Composer (8 episodes)Music Director (8 episodes)
Hong Yoon-sung
Sound Re-Recording Mixer (8 episodes)
Kim Suk-won
Sound Supervisor (8 episodes)
Jeong-eun Song
Sound Effects (8 episodes)
Visual Effects 2
Choi Ji Hyeon
Lead Character Designer (8 episodes)
Writing 2
Pak Tae-jun
Comic Book (8 episodes)
Isao Murayama
Screenplay (8 episodes)