Morto is an extremely powerful magical entity that claims to be the spirit of murder itself. He is possibly a genii. He had been trapped for centuries in a dusty book hidden in a castle. When the book's metal lock rusted and broke, curiosity brought a man to open the book, releasing Morto from his prison. Morto quickly set out to make new allies, such as Adolf Hitler and the Axis leaders, who would help him to murder as many people as possible. Presumably the more people were killed, the more powerful Morto would become.