By the 17th century, the Megans settled in Salem, Massachusetts, after realizing that Humans only wished to use them to serve greed and lust. They chose to live their lives there as "normal men" to avoid the accusations of being "devils, wizards, warlocks and evil sorcerers." Unfortunately, while living in Salem, several of the Megans made mistakes and used their powers. They were burned for doing so, as witches during the Salem witch trials.
Those Megans who escaped the witch trials were forced to leave Earth and return to their homeworld, where they remained bitter and fearful of Humans.