After listening to Gorg keep calling him "Kreesto," I decided to look up the pronunciation gude in the media guide.
I think I figured out why the tools on BTN last night kept called him "Greg-ware". The media guide has his name phoenetically spelled as "greg-WAHR". At least I can understand where the "-ware" came from. I still don't know where TH gets "greg-WIRE" from.