- Byun Yo-han
- Han Seo-Joon
- Kim Mu-yeol
- Mr. Kwak
- Park Myeong-hoon
- VP. Jeon
- Lee Joo-young
- Hacker Ggang-Chil
- Kim Hee-won
- Captain Lee Kyu-Ho
- Lee Geun-hoo
- Police
- Kim Hee-sang
- Detective
- Yoon Jeong-ro
- Voice phishing writer
- Park Ji-hoon
- Busan recruitment policy
- Yang Ji-soo
- Call center supervisor
- Choi Ji-yeon
- Voice phishing victim
- Yoon Seul
- Construction office manager
- Shim So-Young
- Chinese ironworks accountant
- Yoon Young-kyun
- Deputy Cheon-bon's subordinate
