I liked this quote which is from the revenge of the sith novel which made me want to do this
"A lifetime ago he was an organic sentient being. A lifetime ago he had friends, a family, an occupation; a lifetime ago he had things to love, and things to fear. Now he has none of these. Instead, he has a purpose. It’s built into him."
It's kinda of a let own that neither in ROTS nor TCW gave him any character development or depth other than just being more than just a bad guy.