Caillou Isiah Joseph Pettis was born on June 28, 2000 in Calgary, Alberta, Canada. At the young age of nine years old, Caillou became very intrigued in the entertainment industry watching television shows, movies, and cartoons. Caillou first pursued his acting career at the age of twelve by creating his own YouTube channel in which he has operated and posted videos on ever since 2012. His first ever talk show was hosted by himself, and his friend Nicholas Favel called FalconCast. The show was for him and Nicholas to talk to the viewers about funny stories, sing on-the spot songs, and bring on other special guests. The most notable guest being Beau Chevassus who operates his own company, Knok Studios.In 2014, he created another talk show on his YouTube channel, called Brewer Breakfast, a show inspired by Rhett and Link's Good Mythical Morning. The show's episodes consists of fun family friendly games, activities, and challenges. Pettis also grew up loving the 1990's sitcom Seinfeld, stating that he watches it every day. Because of his love for Seinfeld, in 2015, Caillou started his own web-based sitcom based on Seinfeld, entitled Fancy Boys.In 2018, Pettis will direct and star in the feature length horror film Omnicron. It will mark his feature film debut.