Mephistopheles

Mephistopheles (/ˌmɛfɪˈstɒfɪˌliːz/, German pronunciation: [mefɪˈstɔfɛlɛs]; also Mephistophilus, Mephistophilis, Mephostopheles, Mephisto, Mephastophilis and variants) is a demon featured in German folklore. He originally appeared in literature as the demon in the Faust legend, and he has since appeared in other works as a stock character