The Dads[]
- Gary Sweet as Lewis Crabb
- Firass Dirani as Justin Baynie
- Rhys Muldoon as Mark Oliver
- Gyton Grantley as Kane Albert
The Mums/Guardians[]
- Julia Morris as Gemma Crabb (previously Horne)
- Leah de Niese as Nicola Baynie (previously Panis)(deseased)
- Natalie Saleeba as Abigail 'Abi' Albert
- Tim Campbell as Tom Parker
The Kids[]
- Anna McGahan as Lucy Crabb
- Georgia Flood as Phoebe Crabb
- Madison Torres-Davy as Matilda 'Tilda' Crabb
- Riley Webb as Zachary 'Zac' Baynie
- Matteo Annetta/Fletcher Grant (season 3 onwards) as Jacob Baynie
- Various babies/Allegra Volange (season 3 onwards) as Angela 'Angie' Baynie
- Lily Jones as Poppy Oliver
- Various babies/Audrey & Ava Bellert (season 4) as Sophie Oliver
- Edwina Royce/Jade Knight (as of season 4) as Stella Parker
- Ben Crundwell as Finn Kirby
All items (5)