Nicholas Andrew "Nicky" Banks

Nicky is the youngest of the Banks children, a small kid navigating a big, wealthy household where everyone else seems older, sharper-tongued, and more sure of themselves. He's curious and good-natured, often the innocent bystander to the family's schemes and squabbles, more interested in play than the status games swirling around him.

There's something disarming about a child actor holding down the youngest-sibling role in a house full of big personalities like Will and Carlton — Bagley plays Nicky with an unforced sweetness that gives the show a soft landing spot. He's the reminder that underneath the mansion and the one-liners, this is still just a family.