Directed by
| Seong-gang Lee | ||
Writing Credits (in alphabetical order)
| Su-jeong Kang | ||
| Seong-gang Lee | ||
| Mi-ae Seo | ||
Cast (in credits order)
| Lee Byung-hun | ... | Namoo (voice) | |
| Kong Hyeong-jin | ... | Jun-ho (voice) (as Hyeong-jin Kong) | |
| Bae Jong-ok | ... | Namoo's Mother (voice) (as Chong-ok Bae) | |
| Ahn Sung-ki | ... | Kyeong-min (voice) (as Sung-kee Ahn) | |
 |
Jang Hang-seon | ... | Jun-ho's Father (voice) (as Hang-Seon Jang) |
| Na Moon-hee | ... | Namoo's Grandmother (voice) (as Moon-hee Na) | |
| Rest of cast listed alphabetically: | |||
| Christine M. Auten | ... | Mom (voice) | |
| Greg Ayres | ... | Additional Voices (voice) | |
|
|
Clint Bickham | ... | Jun-Ho (voice) |
|
|
Rick Burford | ... | Additional Voices (voice) |
| Shelley Calene-Black | ... | Grandma (voice) | |
| Victor Carsrud | ... | Additional Voices (voice) | |
| Kaytha Coker | ... | Additional Voices (voice) | |
| Jay Hickman | ... | Nam-Woo (Adult) (voice) | |
|
|
Seok-jun Lee | ||
|
|
Seok-jun Lee | ... | Office Colleague 1 (voice) |
| George Manley | ... | Additional Voices (voice) | |
| Andy McAvin | ... | Beard Man (voice) | |
| Chris Patton | ... | Jun-Ho (Adult) (voice) | |
| Monica Rial | ... | Additional Voices (voice) | |
| John Swasey | ... | Jun-Ho's Dad (voice) | |
| Kira Vincent-Davis | ... | Soog-Y (voice) | |
Produced by
| Seoung-Jae Cha | ... | co-executive producer |
| Choi Jae-won | ... | executive producer (as Jae-Won Choi) |
| Seong-weon Jo | ... | co-producer |
| John Ledford | ... | executive producer / producer |
| Carl Macek | ... | english language producer |
| Jeong Tae-sung | ... | co-producer |
Music by
| Byung-woo Lee | ||
Cinematography by
| Geun-wook Kwon | ||
Editing by
| Gok-ji Park | ||
Art Department
| Ji-Hoon Hong | ... | storyboard art director |
| Jina Jung | ... | color coordinator |
Sound Department
| Eun-ah Choi | ... | dialogue editor |
| Sung Rok Choi | ... | sound effects editor |
| Cesar Inserny | ... | sound designer / sound mixer |
| Chang-seop Kim | ... | sound designer |
| Ju-kang Park | ... | sound effects editor |
| Cristinel Sirli | ... | sound mixer (as Christinel Sirli) |
| Kim Suk-won | ... | sound |
Special Effects by
| Ki-pyo Kim | ... | special effects |
Animation Department
| Moon-hee Kim | ... | animation director |
Editorial Department
| Eun Huh | ... | dcp mastering |
| Yong-gi Lee | ... | colorist |
Additional Crew
| Soo Kim | ... | translator (English version) |
