User blog comment:Tommy,Klaus&Kol2012+/Will Mephistopheles appear on Supernatural?/@comment-3481504-20120710015213/@comment-1509826-20120710174729

Well, in the lore you are right, Mephistopheles is another name for devil, but in some culuters so is Azazel, so its not impossible that he might appear, rethought as a demon. After all in the lore Azazel is a fallen angel, and Uriel is sometimes an archangel.