Characters are recruited by US government as agents to "solve" cases involving supernatural circumstances
This villain is acting as a broker for ancient deities (so far they've encountered ancient Babylonian, and Celtic mythologies) making large sums of money by bringing the deities and prospective supporters into contact.
Motivated by profit and revenge
was originally a level 7 (this is HUGE in this instance) adept for the current agency the characters now work for, the leadership initially thought he was dead.
Characters only have an inkling that someone is pulling strings
Communicates by alluvian (mirror) whereabouts unknown
I hope to hear some good ideas of how to slowly shift him into gameplay for the characters. As well a certain capabilities he may have. I have about a month and a half till endgame so talk to me soon!