Actually, it looks like it might have some useful tools for character design
http://polybrush.org/index/tutorials/0-8

Go about half way down the page and watch the Bone Mode, Bone Remesh Tool and Surface Tool videos.

Here's another
https://www.youtube.com/watch?v=YL5zk2aGSBc&list=PLtXjouw26VhdOWOBTnR2EppgfFeMKYWg7