Donnie Yen

as Carl Tam

Sandra Ng Kwan-Yu

as Chelsia Sung

Louis Koo

as Holland

Kelly Chen Hui-Lin

as Julie Sun

Raymond Wong Pak-Ming

as Richard

Yang Mi

as Cecilia

Chapman To Man-Chat

as Hugo

Lynn Hung Doi-Lam

as Charmaine

Cherrie Ying Choi-Yi

as Carl's Girlfriend

Ronald Cheng Chung-Kei

as Shalala

Gong Linna

as Xia Fan

Karena Ng Chin-Yu

as Richard's daughter

Kristal Tin Yui-Nei

as Daphne

Lam Suet

as Construction Worker

Singh Hartihan Bitto

as Curry

C Kwan

as Jim

Vincent Kok Tak-Chiu

as Fattie

Lee Heung-Kam

as Orphanage Director

Matt Chow Hoi-Kwong

as Lawyer Yi

Mannor Chan Man-Na

as Sofia

Hiro Hayama

as Spungehuff

Michelle Lo

as Chief Editor

Mak Ling-Ling

Zeny Kwok Sin-Yu

as Schoolgirl

Maria Cordero

as Mentor

Lee Sheung-Ching

as Billy, Daphne's manager

Ciwi Lam Sze-Man

as New Music Star

Jeremiah Zhang

as Justin Nam

Billy Luk Wing-Kuen

as Rich Junior

Elva Ni Chen-Xi

Hoffman Cheng

as Clayhead

Wen Chao

as Dubya Dung

Chui Tien-You

as Eye Doctor

Ha Chun-Chau

as Wedding Registrar

Teresa Carpio

as Self

Peter Lai Bei-Dak

as Self

Louis Cheung

as Self

Wilfred Lau Ho-Lung

as Self

Tony Wong Yuk-Long

as Boss Wong

Steven Fung Min-Hang

as Snake

Ho Ming Luk

as Unlucky Driver

Jessica Jann

as Boss' Daughter

Josephine Chi Yan Chai

as Mentor's Assistant

Patrick Dunn

Lam Chak-kwan

as Doctor

Yu Miu-Lin

Danny Chan

as Helmet