User blog comment:Tommy,Klaus&Kol2012+/Will Mephistopheles appear on Supernatural?/@comment-3481504-20120710015213/@comment-24169020-20120710203256

Here are some other names for the devil that SPN could make into separate entities:

Apollyon

Asmodeus

Beelzebub

Samael

those are the only ones I could find that were just names that didn't describe him