Jessie Prescott [26] (Debby Ryan), an idealistic and resourceful girl from a military base in rural Texas. Rebelling against her strict Marine Sergeant father, Jessie moved to New York City to realize her dreams of stardom, but with an unexpected turn of events ends up becoming a nanny to the four Ross children. In the episode "Cattle Calls and Scary Walls" and "Teacher's Pest" her last name is revealed to be Prescott. She mentions her father in
various of episodes. In the episode Make New Friends But Hide The Old, she revealed that she is an only child.
Emma Ross (Peyton List), a bubbly,diva, somewhat ditzy, cynical girl, eager to reorder the world to the way she sees it. Emma is the oldest and the sole biological child of the Ross kids. It appears in Season 1 that she spends most of her time with Zuri, and doesn't appreciate Luke as much as her other
Luke Ross (Cameron Boyce), a clever boy who was born in Detroit and has a passion for video games, break-dancing, and causing a bit of mischief around the penthouse. He considers himself a "ladies' man", having taken a liking to Jessie in particular. Luke is the second-oldest child of the Ross children. In the episode The Kid Whisperer his full name is revealed to be Lucas. It seems that in Season 1, he spends a lot of time with his brother, Ravi, and has a close frenemy bond with Bertram. Even though he fights mostly with Emma, he tries to cope with her in many ways. Also, he's hardly seen with his sister, Zuri, unless they're planning "schemes" together, but she usually leaves him to fend for himself. In "Gotcha Day", Luke claimed that he was from Krypton (which his father once told him as a joke), but he knew where he is really from.
