PSRC Human Mk2 is 100% free and its included with the Devkit. Includes the Skeleton Mk2 too! Essentially, this *is* the Human Mk2 pack.
The only thing I charge for are the other PSRC packs - the ones with various objects - but the human/skeleton is completely free though.
Much luck to you with the character generator, this system can really benefit from it! Heck, I'd love to use it too.