Frankie – Madame Foster's 22-year-old granddaughter, addressed as "Miss Frances" by Mr. Herriman. Frankie is the caregiver at Foster's and helps keep everything in order. In spite of Mr. Herriman's fussiness and fixation with rules and cleanliness, having to take care of everyone and everything in the house, and Bloo's mischief-making (all of which cause her tremendous stress), she is usually very friendly and easy-going. And though she may seem somewhat like a to Mac, she is more accurately described as a big sister to the imaginary friends. She is voiced by Grey Delisle.
- Grey DeLisle - English
Olivia Flaversham in the Great Cricket Detective
Constance the Coast Guard in Flapjack Tugboat
Mrs Brisby in The Secret Of NIMH (TheTureDisneyKing Style)
- She is a yellow haply emotion
Pearl in Stanley Universe, Stanley Universe: The Movie and Stanley Universe Future
- She is a white gem
Lucy in We Bare Carnosaurs
Mrs. Park in We Bare Equids and We Bare Pleistocene Animals
- She is a green, badass tempered powerpuff girl. She is based on Lauren Faust.
- In Foster's Home of Imaginary Rodents she is played by Raye/Sailor Mars.
- In Foster's Home for Imaginary Cartoons, she is played by Joy
- Her appearances in the Stephen Squirrelsky and Friends' Movie Spoof Travels are FernGully: The Last Rainforest (Dragon Rockz's Style), A Pooh in Central Park, Bubblesrella 2: Dreams Come True, The Brave Little Piglet, Kung Fu Owen, Nikki's Adventures of Sing Along Songs Episode 8, The Thomas O'Malley Movie, Kermit Returns, Fievel the Red Nosed Mouse and The Island of Misfits, Nikki's Adventures of Sing Along Songs Episode 9, A Cartoon Character's Life Activity Center, Cloudy with a Chance of Meatballs (Justin Quintanilla's Style), Finding Alvin (J.B. Eagle's Style), Animated Tale (TheTure DisneyKing's Style), The Forest Book 2 (TrainBoy43's Style), Nikki's Adventures of Sing Along Songs Episode 10, Madagascar (FamousImagination50's Style), Sleeping Beauty (Justin Quintanilla's Style), Aurorastasia, Despicable Me (Justin Quintanilla's Style), We're Back!: A Jungle Animal's Story, Jimmynocchio, and The Wizard of Oz (Uranimated18's Style) and will even be in more movie spoof travels.