Superheroes have been portrayed in animation since the early 1940s. Up until the late 90s animated cartoons have been the most common venue, right after comics, to depic superheroistic adventures. Contrary to live action productions, they do not require expensive sets and special effects, although animation production standards can vary widely in cost. As a result, cartoon shows featuring superheroes became a staple of children's entertainment with a few shows reaching adult audiences.