How did I end up with a son like you, eh? You're nothing like me. You never were, and you never will be.
~ Johnny's Father expresses his disappointment towards Johnny.
Marcus, also known as Big Daddy, is the (former) secondary antagonist from Illumination's 7th feature film Sing. He is the leader of a gang of gorilla robbers. Johnny's dad also has a garage that he uses as a hideout.
Big Daddy is a large, anthropomorphic gorilla who wears a blue shirt with with darker blue jeans, a gold necklace with a red stone, and three gold rings, also with red stones. During robberies, Big Daddy wears a sky blue jumpsuit, gloves, and a rabbit mask. When he and his gang are sent to jail, he wears an orange prisoner uniform.
As the leader of a criminal gang, Big Daddy has a strong alpha-male attitude. He frequently robs and steals banks and ships for money, loot and gold. He is particularly strict towards his son, Johnny, who he wants to follow in his footsteps. When Johnny inadvertently gets his father and the other robbers arrested, and later admits to his father that he wants to be a singer, Big Daddy disowns him. However, when he is exposed to Johnny's talent, he becomes proud of his son, and so ashamed of his prior behavior he breaks out of prison to apologize to Johnny for selfishly disowning him.
Big Daddy and henchmen Barry and Stan are introduced robbing a bank. They are interrupted by a pair of rhino officers, but successfully drive away, Johnny following after them. After successfully pulling his son into their pickup truck, Big Daddy scolds him for failing his duties as a lookout, and asks where his rabbit mask is.
Later at the garage, the robbers make plans for a massive, final heist of $25 million in gold on a docked ship. Big Daddy requests that Johnny take over Barry's usual position as their getaway driver, and critiques Johnny's driving speed that night. On the day of the heist, however, Johnny leaves his post to attend a rehearsal at the Moon Theater. He becomes stuck in traffic trying to return, which leads to the robbers' arrest.
In prison, Big Daddy meets with Johnny during visiting hours. Johnny ultimately confesses that he would rather be a singer, not a criminal, causing Big Daddy to shun him and selfishly disowns Johnny, even though Johnny swears to bail him out. After the destruction of the Moon Theater, Johnny tries to visit his father again, but Big Daddy refuses to leave his cell (possibly because of his selfish act of disowning Johnny).
When Buster Moon decides to stage a concert at the theater ruins, Johnny performs "I'm Still Standing". The gorilla robbers watch it on T.V.; Big Daddy is so amazed at his son's talent. Ashamed over his actions, he breaks out of prison and evades policemen to reconcile with Johnny and apologize to him. He arrives backstage during Mike's rendition of "My Way", and tells Johnny how proud he is of him before giving him a heartwarming hug. Police helicopters arrive, and Big Daddy takes his leave to return to prison, with Johnny promising to visit him often.
Johnny! You were supposed to be keeping a lookout! And where's your mask?
~ Big Daddy admonishing Johnny
Yeah. It's time my boy had a proper role in the gang, eh?
~ Big Daddy to Stan and Barry
Johnny. He's Johnny. That's my son!
~ Big Daddy seeing Johnny perform "I'm Still Standing" on T.V.
I'm so proud of you.
~ Big Daddy reconciles with his son.
Johnny's father is unnamed in Sing. The names Big Daddy and Marcus were given in ancillary materials.