Characters in The Princess Diaries

Mia Thermopolis

An awkward, tall ninth grader and aspiring writer in Greenwich Village who learns her father is the Prince of Genovia and that she is his heir.

Also in Princess in the Spotlight, Princess in Love, Princess in Waiting, Princess Lessons, Project Princess, Princess in Pink, Princess in Training, The Princess Present, Party Princess, Sweet Sixteen Princess

Lana Weinberger

The head cheerleader who looks down on Mia.

Also in Princess in Training, Princess Mia

Clarisse Renaldi

Mia's strict, critical grandmother, the Dowager Princess of Genovia, known as Grandmere, who gives Mia her princess lessons.

Also in Princess in the Spotlight, Princess in Love, Princess in Waiting, Princess in Pink

Lilly Moscovitz

Mia's outspoken, activist best friend, who hosts her own cable-access show.

Also in Princess in Pink, Princess in Training, The Princess Present, Sweet Sixteen Princess, Princess on the Brink, Valentine Princess, Princess Mia

Michael Moscovitz

Lilly's brilliant older brother, on whom Mia has a crush.

Also in Princess in Waiting, Princess in Pink, Princess in Training, The Princess Present, Sweet Sixteen Princess, Princess on the Brink, Valentine Princess, Princess Mia, Forever Princess, Royal Wedding

Prince Philippe Renaldi

Mia's father, the Prince of Genovia, who tells her she is his heir.

Also in Princess Mia, Forever Princess, Royal Wedding

Helen Thermopolis

Mia's quirky, free-spirited painter mother.

Also in Princess in the Spotlight, Princess in Love, Princess Mia, Royal Wedding

Frank Gianini

Mia's algebra and homeroom teacher, who is dating her mother.

Also in Princess in Love, Princess in Pink

Josh Richter

A popular boy and Mia's first crush, who is dating Lana at the start of the book.

Tina Hakim Baba

A classmate who befriends Mia and has a bodyguard because of her overprotective father.

Also in Princess in Love, Princess in Waiting

Fat Louie

Mia's large cat, who loves shiny objects and eating socks.

Lars (Princess Diaries)

Mia's bodyguard, who follows her almost everywhere.