lament
Uses the excellent random OSR character generator at http://character.totalpartykill.ca/lotfp to fill PDF character sheets with random characters.
Lament is now available as a webapp!
Intended for Lamentations of the Flame Princess - https://www.lotfp.com
The character generator was created by funkaoshi, and lives at https://github.com/funkaoshi/randomcharacter.
This tool uses the (frankly amazing) character sheets created by Last Gasp Grimoire. They're available at http://www.lastgaspgrimoire.com/penny-pamphlets/. Really, though, their entire site is a revelation unto the unworthy.