timdiggerm said:

That is one of the stranger ideas I've seen on here.

It's genius but It would be a lot of work to do it I guess any shots would need to have have 2 layers one for the actors to appear normal and one for the CGI stop motion puppets effect the same shot twice with as simple a mask as possible.

Is that effect created by dropping a few frames out of the video then?

for grievous voice best to go the cylon sounding route I think.

https://www.youtube.com/watch?v=3H4fYtDkTxk

not sure if this phone app saves the sounds you record and then you can export them but the extra deep fat cylon voice would suit grievous much better.