system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Did the general public really know about Darth Vader at all?

Was Vader a public figure? I ask because when Obi-Wan tells Luke about his father, he says he was killed by "A young jedi named Darth Vader." Luke doesn't react at all, not even when he says that he was a former pupil of Ben's. So it seems that Luke had never heard of him, or else he would say something like, "Holy shit! You were Darth Vader's teacher?!" So was Vader someone that would be known to the general public?
gpt
Darth Vader was not a public figure.  When the Emperor was really, *really* mad at someone, a dark, shadowy figure would make them wish they were never born.  High-ranking military officials and people who were "in the know" would be more or less aware of Vader, but the common citizen would not.

That being said, we do know that he appeared on early Imperial broadcasts.  Obi-wan saw something like a news video that depicted Vader soon after their battle on Mustafar.