During the middle of the 19th century, Walt Disney was the world's most well-known animator. At that time, all other animation was made under the influence of his style. Despite Disney's monopoly, Per Åhlin developed his own style and approach to animation. Åhlin's movies films were a continuation of Sweden's history of animated film which had begun with animators such as Victor Bergdahl. The Disney style is characterized by anthropomorphic animals which live in an ideal, asexual world. The characters look cute and go on adventures. There is no social criticism or real issues. The world is realistic – the locations are physical places and that characters move in realistic ways. Per Åhlins style is, however, the complete opposite to Disney's. Åhlin's characters are, for the most part, stylized humans. His animation is simplified, which is also called “reduced animation.” The characters move in unrealistic ways, they change and morph. Åhlin's films are also criticisms of society. He criticises capitalist society and its consumption, money obsession and alienation. He also criticizes pollution. Åhlins work can be compared to the work of the Zagreb school of animated film. The Zagreb school was a group of animators who made animated films in Zagreb in the second half of the 20th century. Their movies are characterized by a stylized, simplified style, reduced animation and criticism and satire of society. Åhlins work remains relevant to this day, and he has received numerous prizes for his films.