Main Characters Chun Seo Jin 48 main appearances Shim Soo Ryun 35 main appearances Oh Yoon Hee 39 main appearances Ha Yoon Chul 18 main appearances Kang Ma Ri 18 main appearances Baek Jun Ki 17 main appearances Lee Kyu Jin 17 main appearances Ko Sang Ah 17 main appearances Logan Lee 13 main appearances
Recurring Guest Characters Shim Soo Ryun 8 guest appearances Ha Yoon Chul 21 guest appearances Kang Ma Ri 21 guest appearances Baek Jun Ki 21 guest appearances Lee Kyu Jin 21 guest appearances Joo Suk Hoon 34 guest appearances Ha Eun Byul 34 guest appearances Bae Ro Na 31 guest appearances Joo Suk Kyun 31 guest appearances Na Ae Gyo 3 guest appearances Jung Doo Man 2 guest appearances