Brogar Ironvein
Original campaign-world reference. Sections describing the supplied Day 17 instance record that playthrough only; possibilities remain possibilities.
Role: Dwarven craftsman and trader with expertise relevant to ancient works. World lore: Brogar need not be a starting ally. Expertise does not imply ownership of constructs or other assets.
Day 17 instance: The party found Brogar in Dagger Falls. Hugo showed him Edren's credential, and Brogar agreed to travel to Idlewood with his legitimate three-wagon trade caravan. He later stabilized the White-eyed construct. Brogar and his people were assigned logistics and technical roles around Weller/Idlewood, but the source does not say he owns any sentry or construct. His precise current status and location should be confirmed before his return. Practical expertise does not establish that he can identify every maker or ancient system.
Sources: campaign continuum, Brogar outreach; campaign continuum, important NPCs; creation helper, constructs.