Rhefugi is the language spoken by Ambrose Malachai that was introduced when he was first encountered. It's a demonic language aka "The forbidden language." Though he speaks both English and Rhefugi, Rhefugi seems to be his stronger area.
In the cases Rhefugi is spoken, a translator for the dear user:
Translate this as an example:
Slofzdoseaf pathdysy, qaq. Uai pof faq ifkylzsofk swez dofriory