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

Yang Neng

Curator

Sun Jialing

Courier

Li Yeqing

Ruo-Lan's Assistant

Kabby Hui

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" [BBQ chicken stall boss]

Zhang Zhihan

Gunner

Zhang Xiaoming

Mermaid