Give them a distinct physical trait or a "meta" personality quirk to make them memorable. Community Insights on Running NPCs vs. DMPCs
Take a common name and change the first letter (e.g., "Zork the Orc") for instant naming. npc-dmpc.part01.rar
Differentiating between a helpful NPC and a problematic DMPC is a major topic in the TTRPG community. Give them a distinct physical trait or a
Use furniture names for a quick, "foreign" sounding fantasy feel. "foreign" sounding fantasy feel.