Salem

Salem is a city on Earth, part of the United States of America. Located in the state of Massachusetts, the city became infamous for the Salem Witch Trials that took place in the late 17th century.

Salem was home to a number of Megans, who lived in the city under the guise of ordinary people. When some Megans made mistakes and accidently used their powers a number of them were executed by the humans living in Salem. The surviving Megans left Earth and returned home, fearful and bitter towards humans for the next several hundred years because of their experiences. (TAS episode The Magicks of Megas-Tu).