Park Jung-gu (played by Byun Yo-han) is a protagonist in Tinker Ticker.
Hyo-min (played by Park Jeong-min) appears in Tinker Ticker.
Professor Baek (played by Kim Hee-chang) appears in Tinker Ticker.
Managing director Kim (played by Kim Jong-goo) appears in Tinker Ticker.
Detective Oh (played by Oh Chang-kyung) appears in Tinker Ticker.
Si-Won (played by Lee Si-won) appears in Tinker Ticker.
Interviewer (played by Park Hye-jin) appears in Tinker Ticker.
Han Gyu-nam (played by Park Seong-il) appears in Tinker Ticker.
