Memorist

Dong-baek

Han Sun-mi

Lee Shin-woong

Jeon Hyo-sung

Oh Se-hoon

Goo Kyung-tan

Lee Seul-bi

Jin Jae-gyu

Hwang Bong-gook

Young Dong-baek

Lee Bo Yun

Yoon Ye Rim [Mrs. Gong's daughter]

Girl in Jae-gyu's memories

Moon Yong-gang's Mom (Eps 14)

Geng Boss (Eps 10)