| Name | Character | Episodes |
|---|---|---|
| Lee Min-ho | Hansu | 16 |
| Anna Sawai | Naomi | 16 |
| Jimmi Simpson | Tom Andrews | 16 |
| Soji Arai | Mozasu | 16 |
| Youn Yuh-jung | Older Sunja | 16 |
| Jin Ha | Solomon | 16 |
| Jeong In-ji | Yangjin | 16 |
| Kaho Minami | Etsuko | 8 |
| Kim Sung-kyu | Mr. Kim Changho | 8 |
| Jun Kunimura | Kato | 6 |
| Kim Kang-hoon | Teen Noa | 5 |
| Mari Yamamoto | Hana | 5 |
| Yoriko Haraguchi | Mieko | 3 |
| Aoi Nakamura | Takashi Sawano | 2 |
| Martin Martinez | Angelo | 2 |
| Miho Suzuki | Japanese lower girl | 2 |
| Kirara Inori | Akiko Nakazono | 2 |
| Jung Woong-in | Hansu's father | 1 |
| Kim Tae-woo | Eel vendor #2 | 1 |
| Kerry Knuppe | Mrs. Holmes | 1 |
| Jimmy Bennett | Andrew Holmes | 1 |
| Hiro Kanagawa | Goto | 1 |
| Lee Seo-hwan | Tailor Kinoshita | 1 |
| Rome Kanda | Doctor | 1 |
| Hyunri | Kiyo | 1 |
| Nobuya Shimamoto | Genta | 1 |
| Kurt Evans | Toby Hess | 1 |
| Sean Kohnke | Russian boxer | 1 |
| James Yi | Eel vendor | 1 |
| Kim In-woo | Mr. Hasegawa | 1 |
| Takashi Yamaguchi | Ryoichi | 1 |
| Bob Frazer | Mr. Holmes | 1 |
| Kazuhiro Muroyama | 1 |