fb7d1f71__Walkthrough_by_metzomagic_com__Why_and_How
[Who] Gorgoth [Where] The Void [Why and How] 
You should be able to get him to join you by giving him an Animal Carcass, but I could never make this work.
Arcanum Walkthrough - Just One of Many Reviews on this Website Walkthrough by metzomagic.com
Why and How