My first time through, I pictured Stargate's Don Davis as Zife, but that was a huge mistake. He's way too authoritative and booming. Now I'm not sure...I've considered maybe Dana Elcar (Pete from MacGyver).
Didn't Don Davis work as a body double for Elcar during MacGyver
? I think I remember him saying that in a Stargate interview. Not that it's relevant, just a little trivia I heard.