IMDB shows us new characters? - take with a pinch of salt
On IMDB appeared new characters, but IMDB is not 100% trusworthy so take with a pinch of salt.
I circled those new or not so much spoken about :).
Episode 1:
Steven McNicoll as Agent Fuzuli
Episode 2:
Mmm.
The matches in the trailer says: Out of his mouth go burning lamps, and sparks of fire leap out.". which is Job 41:19.
Here we see quite a lot of people seemingly cast as Job and his family, there is Job (played by David Tennnat's father-in-law :)), Job's son Ennon (played by David's son :)), Job's wife Sitis, Job's daughter's Jemimah and Keziah.
So... certainly seems like the biblicle minisode will include Job and his family? :) Learn more about Job - wiki :).
Episode 3:
Oh, a lot of new characters! :) Demon Josh? :))
Episode 4:
Another Nun? :)
Episode 5:
Oh, demon Morax? :) From wiki: In demonology, Morax is a Demon, Great Earl, and President of Hell, having thirty (thirty-two, according to other authors) legions of demons under his command. He teaches Astronomy and all other liberal sciences, and gives good and wise familiars that know the virtues of all herbs and precious stones. He is depicted both as a man with the head of a bull, as well as a bull with the head of a man.
Episode 6 has already mentioned once :).
As I said, take with a pinch of salt, but still interesting! :)