Fast Fantasy is a series of PDFs that includes a detailed background of an NPC, as well as 4 statblocks of the character at low, mid and high level. The series does not include images, one of its biggest flaws, but does include, long well written prose to give a character enough of a background to infiltrate a campaign.
Fast Fantasy 4 gives us a wizard, Erinor Calmisius. Wild Hunt Games does a good job of creating a purposeful wizard. There is nothing special in the backstory to lean him closer to a villain or a hero, so DMs are welcome to add what they wish for the purpose they need.
The Iron Word
Fast FAntasy products are great little supplements to have nearby for those times when PCs meet or kill an NPC you had not planned for.