- Flynn – IV‘s protagonist. Is revered as a Messiah after overthrowing angels and demons one after another.
- Jonathan – Was devoted to and became one with Merkabah. Is aiming for a world free of impurities.
- Walter – Was originally a human being but is now reborn as Lucifer. Occasionally returns to his human form and retains his previous memories.
- Isabeau – To save Flynn from the grasp of the Polytheistic Gods Alliance, she works with the new hero as a partner.
The Polytheistic Gods Alliance itself so far consists of Miroku and Odin but no other details about them have been revealed as of yet. You can check out a couple of teaser screenshots from Famitsu below.