Warner Bros. Cartoon Studio was founded by the Warner brothers - Harry, Albert, Sam, and Jack - in 1923. They were a successful film company known for their early "Vitaphone" sound films and later for their iconic animated characters like Bugs Bunny, Daffy Duck, and Porky Pig.
Walt and Roy Disney founded The Walt Disney Company in 1923, which is famous for characters like Mickey Mouse, Donald Duck, and Snow White. They focused on animated feature films, while Warner Bros. primarily produced animated shorts and cartoons.