NPC Names & Portraits Creator is a module that mass-creates new NPC actors from one template. Right-click a template actor, choose Create Mass Duplicates, then load portraits from a local folder (uploaded into the world) or an existing Foundry/URL path. Each image becomes a new actor named from its filename, with that art on the sheet and token; the rest of the template (folder, items, sheet data) is kept from the sourced duplicate.
The module contains a simple step-by-step window to guide this process.