Lin Yun

Mermaid Shan

Deng Chao

Liu Xuan

Zhang Yuqi

Ruolan

Show Lo

Brother Eight

Tsui Hark

Uncle Rich

Wen Zhang

Constable Mo

Kris Wu

Long Jianfei

Lee Sheung-Ching

Constable Shi

Lu Zhengyu

Mr. Liao

Chiu Chi-Ling

Mermaid Long

Zhang Mei'e

Mermaid

Gao Shuang

Liu Xuan's Bodyguard

Linah Matsuoka

George's Assistant

Barbie Liu

Mermaid

Xu Zhenzhen

George's Assistant

White-K

Museum Visitor

Kong Lianshun

Museum Visitor

Tenky Tin Kai-Man

Museum Visitor

Wilson Chin Kwok-Wai

Mermaid Fat

Lam Tze-Chung

Technician

Zheng Jifeng

Cheng

Fan Shuzhen

Mermaid Shitai

Ivan Kotik

Dr. George

Pierre Bourdaud

Auctioneer

Yeung Lun

Curator

Sun Jialing

Courier

Li Yeqing

Ruo-Lan's Assistant

Kabby Hui Nga-Ting

Reporter

Zeng Yilian

Office Lady

Zhou Shuai

Party Guest

Zhao Fanghua

Party Guest

Zhang Aiqin

Bald Merman

Bobby Yip Kin-Sang

(Voice)

Ning Xiaohua

Chicken King

Zhang Zhihan

Gunner

Zhang Xiaoming

Mermaid

Chen Jianfeng

Fisherman

Jin Jinnü

Mermaid

Lan Ge

Party Female Guest

Cindy Chang

Party Dancer

Leng Xueqing

Mermaid

Liao Minjie

Mermaid

Wang Yisu

Party Female Guest