The Japanese production featured a large cast — 57 members in total — with most of the lead roles being double cast. The lead role of Billy was shared by Shirabe Kawaguchi, Kairu Nakamura, Taichi Toshida and Denis Watanabe.
Billy
Michael
Debbie
Mrs W
Dad
Tony
Grandma
Back row l-r: Satoshi Hashimoto (Dad), Toru Masuoka (Dad), Reon Yuzuki (Mrs W), Kei Aran (Mrs W). Front row l-r (The Billys): Shirabe Kawaguchi, Taichi Toshida, Kairu Nakamura, Denis Watanabe.
Dead Mum
Older Billy
Mr B
George
Tall Boy
Small Boy
Denis Watanabe as Billy with Reon Yuzuki as Mrs Wilkinson