[This registry is incomplete. Please help by adding more NPCs!]
Pyrene The Temptress focused NPCs:
Ariella
Alphonse Volesin
Duke Hohenheim Volesin
Edward Volesin
Wulfric
Mal Harath focused NPCs:
Terra
Val'Tosh
Master Vork
The Volesin Family
Duke Hohenheim Volesin
Alphonse Volesin
Edward Volesin
Rose Volesin
The Gast Family
Demetrius Gast
Isabella Gast
Celestan
Angelo
Cheran
Seraphan
Nephilium
Sara
The Seven Lords of the Inferno
Calcifer
Infernas
Purifier
The Fiend Lords
Nihilus
The Black General
Mammon
The Fey
Titania
Istomilo
Darriel
The Lords of Blood
The Gods
Miriam the Valkyrie
Athelion the Lightbringer
Azguloth the Destroyer
The Church of Light
Tyra
The (Corrupt) Church of Light
Speaker Morganna
Speaker Adamus Crane
Exarch Greyson
Exarch Damont
Exarch Tiberius
Exarch Quincy
Exarch Logan
Exarch Gustaf
The Heavens
Genevieve the Champion
Marisiel the Protector
Ysora the Teacher
Hephestia the Adjudicator
The Hells
Melcara the First Fallen