Caillou is the main antagonist of Caillou Gets Grounded. He is an extremely popular character in the GoAnimate community, mostly depicted as a troublemaker with a dark and immature personality. In fact, he is likely the "mascot" of the GoAnimate community. He was originally a character from the Canadian children's TV series Caillou. He is a four-year-old boy living with his parents Boris and Doris, his little sister Rosie and his cat Gilbert. In the eyes of many GoAnimate fans, Caillou is a psychopath, a violent troublemaker, a dumbass, a whiny spoiled brat and even a loser, living under the thumb of his insane parents, and demonstrates very troubling behaviors, an obsession with fast food, most commonly Chuck E Cheese's and a strong dislike of his younger sister, sometimes crossing the line of abuse. He attends pre-school with a few other kids, under Ms. Martin, a strict and abusive teacher.
In GoAnimate videos Caillou's morals are rather fluid, some adaptations of Caillou protray him as a sadistic bully, others portray him as a whiny loser, and a small minority of users portray him as a rather friendly young boy, more similar to his canon personality. His intelligence is also up for debate, as he is both shown to be incredibly unintelligent, but at other times appearing intelligent enough to craft fairly elaborate schemes, even to the point of creating his own computer viruses or hacking websites.
Caillou's best friends are Leo, Sarah, Clementine, and the twins Jason and Jeffery. Sometimes he likes or loves Dora, sometimes he hates her.
Caillou doesn't really have a last name, because he is legally mononymous. The GoAnimate community often gives him the last name Anderson for some reason, probably because of the GoAnimator Isaac Anderson. Maddox121 gives him the last name "Caillou" similar to Mario's movie counterpart having the last name "Mario".
Caillou is a bald four-year-old boy with a round face and nose. He wears a yellow shirt with a red neckline, blue shorts, and red sneakers. His size varies from the countless videos he is in, but he is most commonly shown as being a fair bit smaller than his parents, though larger than Rosie. His age also varies from series to series, mostly from 4 to 12 years old. Sometimes he is even in 12th grade or an adult. Maddox121 later confirmed he is born on August 31, 1997 at GoCon 2017, making him 20 years old, He also confirms that the series takes place in 2007.
Being a popular GoAnimate character, Caillou's appearance varies from video to video, with some creators preferring a more accurate look, and some adding their personal touches to his design. A gallery exists to catalogue his various designs.
Caillou lives with his parents, his father Boris, his mother Doris and his little sister Rosie. He lives close to his grandparents, appear to dislike him a fair bit.
Caillou also has a "cousin" called Mella (she is canon and was created by Hélène Desputeaux, Caillou's creator) but she is mostly never seen in GoAnimate videos.
In some GoAnimate videos, Caillou is shown to have identical twins, sometimes only one or two, most commonly Daillou and Baillou . In more extreme cases, Caillou has one sibling with the -aillou theme for every letter. These twins are usually just recolored versions of Caillou, though some creators have made effort to give his siblings unique looks and personalities. In other videos, Caillou is shown to have another younger sister named Daisy. Other users have also added their own members to Caillou's family.
The name Caillou originates from the French term "caillou", which defines any small rock you normally see outside ("pebble" or "small rock") because Caillou is bald like a rock. His last name is never stated in the actual Caillou series, and as such, many GoAnimate users have given Caillou made-up ones, the most common being Caillou, meaning he has the same first and last name, or Anderson, a reference to popular GoAnimator Isaac Anderson. Due to the French spelling of his name, most GoAnimate videos mispronounce his name. The official pronounciation of his name is "Kah-you", though most GoAnimate voices render his name as "Kaylew" or "Kay-Eye-Ew".
However, the original creator of Caillou, Hélène Desputeaux, stated that she had originally created a baby named "Bertrand" as a precursor to Caillou, so this might maybe be Caillou's middle name.
In real life
Caillou was originally first created in April 1989 by Hélène Desputeaux, who had drawn him for the first time at this time as she was pregnant with her daughter. In 1997, the TV show was first aired on Teletoon in Canada, and Caillou was the first program to ever air on this channel. But eventually Caillou was taken off from Teletoon.