Big Daddy is an antagonist and the father of Johnny, and the mobster leader of a gang of robbers in Sing. He wants for his son to follow in his criminal footsteps and his overbearing character makes it hard for Johnny to argue. He also owns a garage that he uses as a living space and a hideout.
Big Daddy is an anthropomorphic gorilla. It is seen that he has a very large physique (hence the nickname "Big Daddy"). He is wearing a blue jumpsuit and a white shirt under it. When performing a robbery, he (and his helpers) wear a white rabbit mask.
Big Daddy seems to have a rough and strict attitude towards Johnny at first. He wants his son to follow in his footsteps and be an organized criminal, but scolds him when he wants to be singer instead. After a botched robbery due to Johnny failing to have the getaway vehicle ready, he goes to prison and later shuns his son when he visits him. However, he became very proud of him after seeing his son's performance of "I'm Still Standing" on a prison television. Desperate to see him in person again and to apologize to Johnny for selfishly disowning him, he breaks out of jail and evades police pursuit long enough to briefly see and appreciate him backstage during Mike's performance of "My Way" before leaving to turn himself back in.
Big Daddy, along with the rest of his gang, are introduced conducting a bank robbery. While evading the police, he berates Johnny for failing to keep a lookout and not wearing his mask. Much later, Big Daddy ropes Johnny into being the getaway driver for a large heist of $25 million in gold. However, the time of heist conflicts with a rehearsal, and Johnny fails to return to his designated position, resulting in the gang's arrest.
In prison, Big Daddy finally learns about Johnny's desire to be a singer, and selfishly disowns him, even when Johnny swears to get him out of prison. However, he hears Johnny's performance of "I'm Still Standing", and is so pleased that he orchestrates a jailbreak to apologize for his actions and tell Johnny how proud he is of him.
“Johnny, you were supposed to be keepin' a look-out! ... And where's your mask?”
–Big Daddy scolding Johnny
“Yeah. It's time my boy had a proper role in the gang, eh?”
“Barry don't mind. Do you, Barry?”
–Big Daddy, on Johnny in Barry's place as the getaway driver
“What do you care? It's the last job we ever need to do. When it comes in, we go. Right?”