Non-Player Characters
Personae of Non-Player Characters (p.100) 
| The vanilla DMG NPC persona tables include races not present in the Oath-Bound setting. Entries for absent races do not apply. The underlying approach — generating believable, textured NPCs with consistent internal logic — is sound and applies in full. |
Facts (p.101) 
| The vanilla Facts section includes Alignment as a core NPC characteristic. Alignment does not exist in Oath-Bound. In its place, the equivalent persona facts are Foundation affiliation, cultural identity, and the texture of the NPC’s oath commitments — what they have sworn, to whom, and how faithfully they are honoring it. These replace alignment as the primary indicator of how an NPC will behave under pressure, what they will and will not do, and where their loyalties ultimately lie. |
Appearance, Possessions, and Sanity apply as described. Religious affiliation in Oath-Bound terms is Foundation membership — or its deliberate absence, which is itself a fact about a person.
See Alignment.
Language Determination (p.102)
| The vanilla language table includes races not present in the Oath-Bound setting. Entries for absent races do not apply. |
The Oath-Bound linguistic landscape is richer and more varied than the vanilla default — Velasian and its regional dialects, Markish, Skeldic, Cwym, and other cultural languages each carry their own distribution across different regions and social strata. GMs should calibrate language determination to the specific cultural context of the area being played rather than applying the vanilla table uniformly.
Special Roles of the Dungeon Master (p.102) 
This section applies in Oath-Bound as written in the DMG.
Hiring Non-Player Characters to Cast Spells (p.103)
| The vanilla DMG treats hiring spell-casting NPCs as a fee-for-service transaction. In Oath-Bound the picture is more complex, and varies by actor category. |
Hiring a Divine Actor to perform a miracle is not simply a financial arrangement — it involves their Foundation relationship, their concord, and whether their institution sanctions performing the work for hire. Some Foundations will have specific positions on this. The customary and reasonable principle applies to fees, but the fee is only part of the negotiation.
Hiring an Arcane Actor involves their exhaustion model — what they are willing to spend on a stranger’s behalf, and at what cost to their own capacity. A practitioner who has been working hard may simply be unavailable regardless of the fee offered.