Re: Favorite Sith?
Grievous is not Force-Sensitive. I know this for a fact. The only reason Grievous was able to use lightsabers was because of an implant in his brain. That comes from the Episode III visual dictionary.
While the midi-chlorian-rich blood of Sifo-Dyas may have played a critical role in maintaining Sheelal's life, Grievous saw it as a personal failure that the transfusion did not also give him a degree of sensitivity to the Force