Wonderland

Tang Wei

Bai Li

Suzy

Koo Jeong-in

Park Bo-gum

Park Tae-ju

Jung Yu-mi

Seo Hae-ri

Choi Woo-shik

Kim Hyun-soo

Gong Yoo

Sung-jun

Tang Joon-sang

Choi Jin-gu

Seong Byeong-suk

Song Jeong-ran

Choi Moo-seong

Lee Yong-sik

Lee Eol

Hae-ri's Father

Kang Ae-sim

Hae-ri's Mother

Kim Sung-ryung

Gil-soon

Park Hee-von

Stella

Anupam Tripathi

Hanan

Darcy Paquet

Danny

Jang Yoon-jung

Yong-sik's Wife

Song Duk-ho

Yong-sik's Son

Jang Sung-yoon

Yong-sik's Daughter

Nina Paw Hei-Ching

Hwa-ran

Park Yeon-woo

Male Employee at the Airport

Min Ji-a

Tae-ju's Doctor

Kang Jin-ah

Investigative Detective

Kim Geu-lim

Hae-ri's Colleague

Park Mi-hyeon

Hyun-mi

Jo Hee-bong

Tae-ju's Senior on the Subway

Jeon Su-ji

Jeong-in's Colleague on the Subway

Jeon Woon-jong

Senior Purser

Jeong Seong-in

Jeong-in's Colleague

Son Kyoung-won

Taxi Driver

Lee Nam-gyeong

Young Hae-ri

Moon Jung-woong

Rehabilitation Therapist