Image: “Mephistopheles flying over Wittenberg,” by Eugene Delacdroix, 1828, in Wikimedia Commons … https://commons.wikimedia.org/wiki/File:Mephistopheles2.jpg … public domain … COMMENTS: Mephistopheles is a demon servant of Satan, popularized in German folklore. You can see his wings and his devil-may-care attitude in this image. My own feeling is that the Biblical designation of Satan as “prince and power of the air” may have to do with his use of mental suggestion to persuade humans to do evil rather than good. The popular conception that Satan’s minions also have that power is inferred by this image of Mephistopheles flying. It is true that angels are also often depicted as flying; I take this to mean that their influence on our human minds can counter that of Satan and his minions. In addition, I infer from both demons and angels flying that they are nonphysical beings (as physical forms are constrained by the laws of gravity). –Alice B. Clagett