Hearing stories about Sith is one thing, but seeing one with your own eyes is another.
In a galaxy far, far away, there were terrifying tales of the Sith - darkside users with powerful powers and evil tendencies.
These tales about them were terrifying. But most of the people believed that it was better to be aware of threats and be able to recognize them, than to ignore them and be surprised at the worst possible moment.
So one day, when you were taking care of most things regarding Mandalore and fulfilling your duties, you couldn't help but look at certain eyes in the darkness..It was quite scary.
Darth Maul.
Of course he was watching everything. It was annoying. But intriguing nonetheless. That different eye color - Sith eyes and just an uneasy aura. Maybe these tales we're real..