egg. Ultimately, however, one of the male twins, Pemba, grew tired of being confined. In attempting to escape, he proved himself treacherous. The rip he caused in the cosmic egg begat the Earth. It also compelled Mangala to seek a sacrifice of atonement. For this, Mangala killed Pemba's innocent fraternal twin, Faro. When Faro's remains were scattered on the newly formed Earth, fertile land was formed. Thus the Earth as we know it is the result of the treason of the evil twin and the sacrifice of the good one. Many Native American creation myths likewise provide for the role of dualistic twins. Early fictional appearances Literature In literature, Beowulf has been cited as an early example of the evil twin story. Although it does not feature biological twins or even characters that seem to have similar appearances, the precise parallel language suggests that the monsters are evil reflections of the hero. Film A notable early use of the modern concept of evil twins in film is 1939's The Man in the Iron Mask. This adaptation of a part of the novel The Vicomte de Bragelonne by Alexandre Dumas made a key change to the source material by suggesting that the plot's central twins were in fact opposites of each other. Louis XIV is portrayed as the evil twin of Philippe, a boy raised by d'Artagnan and The Three Musketeers. The movie contains many of the common tropes of the evil twin plot, such as the fact that Phillippe is unaware of his twin's existence, differences in upbringing being important to the twins' adult temperaments, facial hair as a way for the audience to distinguish between the twins, one twin impersonating the other, and the eventual triumph of the good twin. Evil twins were also staples of serial films. They were crucial plot devices in the initial 1937 Dick Tracy storyline and the 1941 Jungle Girl serial. In the 1937 serial, Gordon Tracy was introduced as Dick's twin brother. Gordon underwent an evil scientist's procedure which rendered him evil and physically transformed. For the majority of the story he and Dick were played by different actors, but it is understood that he was intended as a twin. In the case of Jungle Girl, it is not the titular character who has the twin, but her father. She is raised in the wilds of Africa, according to the narrative, because her