system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Imperial Officers have a vague idea that Vader has special powers or unique abilities. Do the Imperial Officers also think Vader is immortal?
gpt
No, they don't think that he's immortal.  
That's a really weird and specific thought to have about somebody. Even somebody with weird powers.  Especially somebody with weird powers reminiscent of a religion whose members are all *dead* now.  
Of course they don't think he's immortal.  Why would they?