X-Rey
From Smacktalks
X-Rey is a paid tool created by Tekken57 that allows users to inject or extract OBJ files from .yobj formatted files.
Newer versions of X-Rey also allow for the injection of facial animations, the manipulation of shaders, and the unrendering of unwanted objects.
Editions
The following are links to the main information and download pages for various Editions of X-Rey: