Best Friend (2020) — Cast
Cast
| Lee Tae-yoon | GI |
| Oh Dal-su | Byeong-sik |
| Lee Jung-chul | Bernard Judge |
| Park Jun-hyuk | General Dodonna |
| Kim Dong-Kyu | Kwon Taehee |
| Kim Hie-won | Directing Department |
| Cho Hyun-chul | Cheol-gu |
| Jung Woo | Kwon Taehee |
| Ji Seung-hyun | Hyeok |
| Kim Byong-chul | Byeong-sik |
| Kim Sun-kyung | Ok-ja |
| Jung Hyeon-jun | Joon-pyo |
| Lee Yu-bi | Eun-sil |
| Yeom Hye-ran | The Woman |
| Han Seung-ju | Min-gyu |
| Park Cheol-min | Eung-guk |
| Kim Ki-cheon | Record Executive |
| Jung Hee-tae | Han Solo |
| Kim Se-dong | Ding Dong |
| Shim Yi Young | Mummy ji |
| Hwang Byeong-gug | Press |
| Yoo Jeong-ho | Lawmaker |
Crew
| Shim Hak-soo | Key Grip |
| Kim Sun-min | Editor |
| Yun Jong-ho | Executive Producer |
| Lee Hwan-kyung | Executive Producer |
| Ko Seung-hyo | Art Direction |
| Mun Byeong-yong | Visual Effects |
| Lee Hwan-kyung | Writer |
| Gang Hye-yeong | Sound Designer |
| Kim Yeong-seok | Writer |
| Yang Hye-jin | Sound Editor |
| Lim Min-sub | Producer |
| Yoon Pil-joon | Writer |
| Kim Seo-young | Makeup & Hair |
| Kang So-yeong | Production Design |
| Hong Jae-sik | Director of Photography |
| Kim Jae-keun | Lighting Director |
| Kang Ju-suk | Production Sound Mixer |
| Jeong Bong-yeon | Stunts |
| Nam Il-yeon | Set Decoration |
| Yu Ji-yeon | Costume Design |
| Woo Je-hyung | Set Decoration |
| Kim Yun-suk | Props |
| Choi Tae-young | Sound Supervisor |
| Yoo Sang-seob | Martial Arts Choreographer |
| Kim Dong-min | Line Producer |
| Choi Jae-geun | Editor |
| Kim Ra-mi | Assistant Editor |
| Lee Dong-jun | Original Music Composer |
| Lee Hwan-kyung | Director |
| Eom Se-yong | Props |
| Kim Jung-sook | Boom Operator |
| Lee Seu-ra | Storyboard |
| Woo Geum-ho | Camera Car |
| Kim Gwang-su | Special Effects Supervisor |
| Kwak Tae-yong | Special Effects Makeup Artist |