I mentioned (and shared a preview of) Nord Games' Ultimate NPCs: Skulduggery Kickstarter a couple of weeks ago. It's now in its final days, and they've sent along another preview from the 200-page book crammed with useful 5E NPCs. This is Tam Fletcher, a mandolin-playing fighter. Each NPC is included in the book at levels 1, 4, 8, 12, 16, and 20.
The Kickstarter is already 400% funded, with 3 days to go. You can get a PDF for $15, a softcover for $20, or a hardcover for $35. The books are available for D&D 5E, Pathfinder, and Swords & Wizardry.