Pemeran Surplus Princess

Jo Bo Ah (조보아)

as Kim Ha Ni / Ai Reen

Pemeran Utama

Ohn Joo Wan

as Lee Hyun Myung

Pemeran Utama

Song Jae Rim

as Kwon Shi Kyung

Pemeran Utama

Park Ji Soo

as Yoon Jin Ah

Pemeran Utama

Jin Hee Kyung

as Company President Jin

Pemeran Pembantu

Kim Seul Ki (김슬기)

as Ahn Hye Young

Pemeran Pembantu

Kim Min Kyo

as Do Ji Yong

Pemeran Pembantu

Ahn Kil Kang

as An Ma Nyeo

Pemeran Pembantu

Kim Jae Hwa

as Kim Woo San

Pemeran Pembantu

Nam Joo Hyuk (남주혁)

as Big

Pemeran Pembantu

Han So Young

as So Dae Li

Pemeran Pembantu

Kim Jin Hee

as Han Gook Ja

Pemeran Pembantu

Lee Seon Kyu

as Himself

Pemeran Pembantu

Kim Ha Rin

as Park Geum Bi

Pemeran Pembantu

Jei

as Han Kook Ja

Pemeran Pembantu

Jang Ki Yong (장기용)

as Competitor (Ep.8-9)

Bintang Tamu

Moon Ji In

as Disappeared mermaid

Bintang Tamu

Kim San Ho

Bintang Tamu

Yoo Byung Jae

Bintang Tamu

Kim Jung Ha

Bintang Tamu

Kang Yong Seok

Bintang Tamu

Song Ho Soo

Bintang Tamu

Chuk Jae Hee

as [Neuropsychiatrist]

Bintang Tamu

Moon Hee Kyung

as [Jin A's mother]

Bintang Tamu

Ra Mi Ran

as Seblin (Ha Ni's sister)

Bintang Tamu

Lee Ji Woo

as [An Ma Nyeo's daughter]

Bintang Tamu

Baek Seung Ryong

Sutradara