Adam Sandler stars as Sonny Koufax, a lazy bachelor who adopts a 5-year-old boy (played by twins Cole and Dylan Sprouse) to impress his girlfriend, in the comedy ‘Big Daddy’ (1999).
Main cast
- Sonny KoufaxAdam SandlerMain
- Julian ‘Frankenstein’ McGrathCole SprouseMain
- Julian ‘Frankenstein’ McGrathDylan SprouseMain
- Layla MaloneyJoey Lauren AdamsMain
- Kevin GerberJon StewartMain
Supporting cast
- Corinne MaloneyLeslie MannSupp
- Phil D’AmatoAllen CovertSupp
- Mr. McGrathPeter DanteSupp
- SidneyJonathan LoughranSupp
- JudgeSteve BuscemiSupp
Guest & voice
- Homeless GuyRob SchneiderGuest
- Delivery GuyJoshua CloseGuest
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About this cast
In the 1999 comedy ‘Big Daddy’, Adam Sandler plays Sonny Koufax, a carefree man who adopts a young boy named Julian to prove he is responsible to his girlfriend. The film also features Joey Lauren Adams as his girlfriend Layla, and Jon Stewart as his best friend Kevin. The role of Julian is portrayed by twin brothers Cole and Dylan Sprouse.
FAQs
Who plays Sonny Koufax in Big Daddy 1999?
Adam Sandler plays Sonny Koufax, the lead character in the 1999 comedy film ‘Big Daddy’.
Who plays Julian in Big Daddy 1999?
The character Julian ‘Frankenstein’ McGrath is played by twin brothers Cole Sprouse and Dylan Sprouse, who shared the role.
Is ‘Big Daddy’ a sequel or part of a series?
No, ‘Big Daddy’ is a standalone film directed by Dennis Dugan and is not part of a series, though it is one of several Adam Sandler comedies from the late 1990s.
What is the film’s rating and runtime?
‘Big Daddy’ is rated PG-13 in the US (12 in the UK) and has a runtime of approximately 93 minutes.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026