The Krell Language is a fictional language created for the 1956 science fiction film Forbidden Planet. It was developed by the advanced alien race known as the Krell, who inhabited the planet Altair IV. The language is depicted as highly complex and sophisticated, reflecting the Krell's advanced technology and intellect. In the film, the Krell language is primarily represented through their impressive machinery and the remnants of their civilization. Although the actual language is not fully developed or spoken, it serves as a symbol of the Krell's achievements and the tragic consequences of their hubris, ultimately leading to their extinction.