Jermaine Noll

Jermaine Noll

Published: 07 Sep 2023


Get ready to dive into the fascinating world of Boo from Monsters, Inc.! This lovable and mischievous character captured the hearts of audiences in the beloved Pixar film. Boo, whose real name is Mary Gibbs, became an iconic figure in the world of animated characters.

In this article, we will unveil 17 intriguing facts about Boo, giving you an inside look into the character and her role in the movie. From her unforgettable scream to her adorable friendship with Sulley and Mike, Boo has left a lasting impression on both children and adults alike.

So, buckle up and join us on this exciting journey as we uncover some hidden secrets and interesting tidbits about Boo from Monsters, Inc.!

Table of Contents

Boo is a lovable character in the movie “Monsters, Inc.”

Boo is a young toddler who stumbles into the Monster world and forms a heartwarming bond with the main characters: Mike and Sulley. Her innocent and curious nature captivates audiences of all ages.

Boo’s real name is Mary Gibbs.

In the credits of the film, Boo is credited as “Mary Gibbs,” the name of the little girl who provided the voice for the character. Her authentic and adorable voice adds to Boo’s charm.

Boo’s costume was inspired by the famous Pixar lamp.

When designing Boo’s outfit, the creators wanted to pay homage to the iconic Pixar lamp. That’s why she wears a yellow top with a red ball cap, representing the lamp’s base and shade.

Boo’s laughter played a crucial role in the movie’s plot.

Boo’s laughter is incredibly powerful and can be used as a source of energy. This discovery leads Mike and Sulley on an adventure to harness her laughter to solve the energy crisis in Monstropolis.

Boo has a special bond with Sulley.

Sulley becomes deeply attached to Boo and develops a strong parental instinct towards her. Their bond grows throughout the film, showcasing the importance of love and friendship.

Boo is fascinated by monsters.

Despite their initial fear of each other, Boo becomes fascinated by the monsters and their world. She fearlessly explores and interacts with them, eventually helping them realize the importance of human connection.

Boo’s giggles were recorded in creative ways.

To capture Boo’s genuine laughter, the filmmakers had Mary Gibbs play games and interact with the crew. They recorded her laughter naturally, resulting in authentic and infectious giggles in the film.

Boo’s animated appearance was based on a real child.

The animators studied the movements and expressions of Mary Gibbs to create Boo’s animated character. This attention to detail brought Boo to life in a way that resonated with audiences.

Boo speaks her own language.

While Boo’s dialogues may sound like gibberish to viewers, it’s actually a combination of different languages spoken by Mary Gibbs during her recording sessions. This adds to Boo’s unique and endearing personality.

Boo’s teddy bear is named “Kitty.”

Boo carries around a stuffed teddy bear throughout the movie, which she affectionately refers to as “Kitty.” The bond she shares with her imaginary friend showcases her innocence and imagination.

Boo is fascinated by doors.

One of Boo’s favorite pastimes is playing with doors. She finds them captivating and enjoys opening and closing them, unaware of the significance they hold in the monster world.

Boo’s laughter can heal monsters.

Boo’s laughter is not only a powerful energy source, but it also has the ability to heal monsters. Her infectious giggles bring joy and warmth to their hearts, highlighting the transformative power of happiness.

Boo’s character was initially supposed to be a boy.

During early development, Boo was planned to be a little boy. However, the decision to change the character’s gender was made to create a stronger emotional connection between her and the monsters.

Boo’s hair was a technical challenge for animators.

Animating Boo’s curly hair was a complex task for the film’s animators. They successfully created a realistic and bouncy hairstyle that added to Boo’s adorable and playful appearance.

Boo’s laughter was infectious on set too.

Mary Gibbs, the young girl who provided the voice for Boo, would often make the crew laugh with her infectious giggles during recording sessions. Her laughter became a source of joy for everyone involved in the film’s production.

Boo’s character is believed to be inspired by Hayao Miyazaki’s films.

The creators of “Monsters, Inc.” took inspiration from the works of Japanese filmmaker Hayao Miyazaki, known for his enchanting and imaginative characters, in developing Boo’s character.

Boo’s relationship with Sulley inspired a short film.

The bond between Boo and Sulley was so beloved by audiences that a short film called “Mike’s New Car” was created to showcase their misadventures and further explore their heartwarming connection.


Boo, the adorable toddler from Monsters, Inc., has captured the hearts of millions around the world. With her sweet innocence and mischievous nature, Boo has become an iconic character in the world of cartoons. Throughout the film, we uncover many interesting facts about Boo that add depth to her character and make her even more endearing. From her real name to her unique vocal talent, Boo’s presence in Monsters, Inc. is truly memorable.

Whether you’re a fan of Monsters, Inc. or just curious about this beloved character, discovering these 17 facts about Boo will give you a deeper understanding and appreciation for her role in the film. From her curious behavior to her heartwarming relationship with Sulley, Boo has left an unforgettable mark on the world of animation.

So next time you watch Monsters, Inc., keep these facts in mind and enjoy Boo’s delightful presence as she continues to bring joy to audiences of all ages.


1. What is Boo’s real name?

Boo’s real name is Mary Gibbs.

2. How old is Boo?

Boo’s age is not explicitly mentioned in the film. However, she appears to be a toddler, estimated to be around 2-3 years old.

3. Is Boo a human?

Yes, Boo is a human child who stumbles into the monster world.

4. Can Boo speak?

No, Boo’s dialogue consists mostly of baby babble. However, she does have a unique vocal talent that helps bring her character to life.

5. What is Boo’s relationship with Sulley?

Sulley becomes a protector and friend to Boo throughout the movie. Their bond grows as they navigate the challenges of the monster world together.

6. Are there any theories about Boo’s future?

There are various theories and speculations about what Boo’s future might hold, including possible crossovers with other Pixar films or her involvement in future installments of the Monsters, Inc. franchise.

7. Are there any Boo merchandise available?

Yes, there is a range of Boo merchandise available, including plush toys, t-shirts, and collectible items.

8. How did Boo influence the storyline of Monsters, Inc.?

Boo played a crucial role in changing the perspective of the main characters and challenging their beliefs about scaring children.

9. What are some memorable scenes involving Boo?

Some memorable scenes involving Boo include her interactions with Sulley, her introduction to the monster world, and her heartwarming reunion with Sulley at the end of the film.

10. Is Boo based on a real person?

No, Boo is a fictional character created for the film Monsters, Inc. However, her expressive and lovable personality resonates with many viewers.