5yo| 5.11ft | 108lbs

The lead character and protagonist of the TV series and books with the same name is Caillou. It is said that he is one of the tallest child characters on TV.  How tall could Caillou be? 

Read the entire article to learn all details about Caillou's age, height and weight and other body index.

I. Age, Height, Weight of Caillou

How tall is Caillou?

1. How old is Caillou?

  • Caillou's Age: 4 years old.

2. How tall is Caillou?

  • In centimeters: 180 cm

  • In meters: 1.8m

  • In feet inches: 5’11’’

3. Caillou Weight

  • In kilogram: 49 kilograms

  • In Pound: 108 lb

4. Eye and Hair color 

  • Eye color: Black

  • Hair color: Bald

II. Caillou Biography

Real name: Caillou 

Nickname: Caillou

Profession: Main character

Caillou Biography

The lead character and protagonist of the TV series and books with the same name, Aillou, is a 4-year-old boy. He is intended to be a representation of a real preschooler and is shown as a curious, daring young child who enjoys exploring the world around him. Every Caillou episode features Caillou, who has been voiced by Bryn McAuley (1997–1998), Jaclyn Linetsky (2000–2003), and since the passing of Jaclyn, Farewell. Jaclyn He was voiced by Michelle Linetsky and Annie Bovaird (2003–2010), and Logan Nicholson is doing so for the new WildBrain film. He also shows up in every Caillou book.

Caillou is curious and inquisitive. He likes dinosaurs and cars. Caillou mentions playing the piano as one of his interests in the song "Caillou Can Count from 1 to 10" and the book "My First Piano Book," both of which have him doing so. However, in the song "Caillou's Got Rhythm," he attempted to play the piano before playing the drum that Grandma had made for him to play in her band. 

When his younger sister Rosie was born in Big Brother Caillou, Caillou was two and a half years old. He is a toddler for the first 17 episodes of Season 1, but after "Caillou's Birthday," he turns 4 and stays that age for the rest of the season. According to My First Piano Book, he is also 4 years old in the books. Caillou is still 4 years old despite appearing to be a kindergartener in later seasons and having a more mature voice. 

According to Where I live, he lives at 17 Pine Street with his mother, father, and youngest sister, Rosie, in a blue, two-story home. A two-story red house is nearby where his grandparents reside. Later episodes depict him going to preschool. 

He typically appears in the early episodes donning a red sweater and green pants that are kept up by yellow suspenders. He dons a red overalls and a yellow shirt in "Big Brother Caillou." He dons a grayish beige shirt with a red collar, blue long shorts, yellow high socks, and blue and red shoes without laces for the song "Caillou All Alone" to start. He wears a yellow shirt with a red collar in Season 2 and the rest of the series. From Season 3 onward, he switches to yellow buttons on his red shirt, but the rest of his attire stays the same. Instead of his trademark yellow shirt, Caillou dons a red bowtie and a blue tuxedo in My First Piano Book's cover and the first page of Caillou Can Count from 1 to 10. A thick round shape under his pants in some photos suggests that he may also be wearing diapers while wearing the first two outfits. He wears a baseball cap occasionally.

III. Caillou Personal Life

  • Date of Birth: 1989

  • Birth Place: N/A

  • Zodiac Sign: N/A

  • Nationality: Canadian

  • Hometown: Canada

  • Religion: N/A

  • Ethnicity: N/A

  • Hobbies: Adventuring, enjoying car and dinosaurs

Originally, Caillou was envisioned as a tiny baby with very little hair. When it came time to age Caillou for situations more appropriate for a two- or four-year-old, the addition of hair would have made him unrecognizably different. Caillou would thus choose to simply refrain from having any. Initially, Caillou was envisioned as a nine-month-old baby. When he was old enough, he had grown enough hair to be unrecognizable.

IV. Caillou Family

  • Father Name: Boris

  • Mother Name: Doris

  • Younger Sister : Rosie

Caillou Family

1. Boris


  • In centimeters: 373 cm

  • In meters: 3.73m

  • In feet inches: 12’3’’


  • In kilogram: N/A

  • In Pound: N/A

The husband of Doris, the father of Caillou and Rosie, and the grandson of Grandma and Grandpa is Boris. Pat Fry provided his voice in the original series, Mike Pollock provided it in the WildBrain remake, and Nick Gligor provided it in Caillou the Grownup. Both of his children enjoy having Boris as their father, who frequently teaches them new things.

2. Doris


  • In centimeters: 361 cm

  • In meters: 3.61m

  • In feet inches: 11’10’’


  • In kilogram: N/A

  • In Pound: N/A


The wife of Boris and the mother of Caillou and Rosie is Doris. In the original series, Jennifer Seguin provided her voice. Hend Baghdady performs her voice in Caillou the Grownup. 

As seen in Caillou's All Alone, where Mommy told Caillou that she was too busy counting bills to play with him, and Caillou Mails A Letter, where she's shown not being happy with getting a bunch of bills and wants a nice letter for a change, she is shown to work primarily from home, where she manages the family's bills and finances.

3. Rosie


  • In centimeters: 160 cm

  • In meters: 1.6m

  • In feet inches: 5’2’’


  • In kilogram: N/A

  • In Pound: N/A

V. Caillou Personality

Caillou is portrayed as a four-year-old who is kind, adventurous, cooperative, and imaginative. Overall, he is always curious about the world around him and eager for new experiences. However, by season 3, an older Caillou's personality was redesigned to be less negative in behavior. This is addressed by the color of his shirt, which changes from gray in earlier seasons to yellow in later episodes. 

Caillou Personality

In several earlier episodes (such as Caillou's Cross Word and Caillou Joins the Circus), the character misbehaves or gets upset when things don't go his way.

VIII. Facts about Caillou 

  1. He occasionally imparts useful life lessons about developing social skills and traveling the world. 

  2. Despite his Gary-Stuish behavior in seasons 4-5 (Cookie Jar era) and the CGI reboot, he behaves much better and doesn't have tantrums as frequently as he did in the earlier seasons. However, in New Adventures, he would revert back to his seasons 1-3 (Cinar era) self. 

  3. He occasionally receives his due, as when Boris reprimanded him for acting out in "Caillou Joins the Circus." 

  4. Being only four years old, he might not fully understand that acting spoiled or selfishly is unacceptable. 

  5. He does occasionally have endearing moments, but they are few and far between. The series finale, "You're Not Miss Martin!," deserves special mention because it shows him redeeming himself and acting less like a Gary Stu. 

  6. Caillou was a baby when the book series began in 1987, but as he grew older, the illustrator discovered that giving Caillou hair would've made him appear unrecognizable, explaining the character's baldness. 

  7. He and Dora are the main characters in grounded videos created in Vyond, Plotagon, and Wrapper, respectively. In addition, recurring victims include Little Bill, Sid the Science Kid, Peppa Pig, Bob the Builder, and (in the case of Harri Marken Prits from Estonia), some of the Numberblocks. 

  8. Due to his bad behavior and unlikable demeanor, he also inspired the creation of the AOK parody series "Caillou at 22" and an appearance in the Family Guy episode "Stewie's First Word."

  9. He can be cute at times when he isn't being bad, and there have been times when he has been helpful and kind. 

  10. He is the most notable instance of a Karma Houdini in the original series because, unlike Angelica from Rugrats, he rarely, if ever, receives punishment or reprimand from his parents for his actions.


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Height Comparison with other Celebrities:


5yo | 5.11ft | 108lbs


Height comparison with Caillou