Question: who did the voice of johnny in sing

title: Sing (2016 American film)
text: The day of the screening , the bears interrupt the show , demanding the money from Mike , who in turn , points to Buster . The bears open the chest containing the prize money , but it is nowhere near $100,000 . The glass tank full of luminescent squids that Buster got to light up the theater breaks under all their weight , flooding the theater , which then comes crashing down . With the lot repossessed by Judith , Buster , who had been living in his theater 's office desk , takes up residence at Eddie 's place ( his parents ' pool house ) . Although the contestants ( besides Mike , who saw Buster as a fraud ) visit him and try to cheer him up , Buster is too despondent to listen to them . He tries to start over by opening a car wash , using the same bucket that his father had used to earn money for Buster 's theater .