Rose Byrne
— Iris
Hugo Weaving
— McHeath
Matthew Le Nevez
— Art Walker (as Matt Le Nevez)
Tyler Coppin
— Donnie
John Batchelor
— Ronnie
Pia Miranda
— Daisy
Kuni Hashimoto
— Hackett
Luke Carroll
— Alby O'Shea
Andrew Nolte
— The Subjects Trumpet
Daniel Potts
— The Subjects Bass
Chris Wood
— The Subjects Banjo
Braydon Chlow
— The Subjects Drummer
John Lakos
— Art's Corner Man
Brendan Guerin
— Mike Flynn
Don Bridges
— Greyhound Eddie
Graham Murray
— Referee #1
Kodi Smit-McPhee
— Jimmy
Jesse Rowles
— Undercard Boxer #2
Bob Murdoch
— Roy
Mark Rayner
— Delaney