Pixel-Me

[ELF]

Pixel-Me, a pixel art character portrait generator, is now on sale at half price at Itch.io:

Pixel-Me is probably the most sophisticated pixelart character-generation tool for an almost unlimited number of portraits.
Create outstanding pixelart-avatars for your Steam account and social media profiles; create striking images of your friends and family or use it to depict your team or for ingame-artwork.

https://tassilo.itch.io/pixelme

The Random button is a quick way to produce NPC portraits in one click. Randomization does not change the color palette. Single elements can be locked or shuffled separately.

In addition to the installer download, also a Steam key is included. Mac version included.

 

[ELF]

Pixel-Me could be a good companion for the Reroll character tracker app:

Reroll is a digital character sheet app for 5e DnD that allows you to create and customize your characters

https://reroll.co/

 

[JohnnFour]

I like both those resources for possible quick NPC imagery.