I have been playing with the new GTA import/export plugin for Blender, and
after a great deal of fiddling with bone models/assignment and UV mapping, I'm starting to see some results.
I have packaged the alien pictured above as a VCM to replace robber. The shoes still need some work, and so does the texture, but at least the
face doesn't twist up now when he turns his head.
I have also announced/released this beta on gtaforums.com.
Don't left click the above download link, right click and select "save as"