Maybe "Ben" is just a common name for humans in the Star Wars universe, and any relationship to Obi-Wan's alias is coincidental. We have many common given names on Earth -- statistically the most common being Mohammed. Why can't the same hold true for the Star Wars universe? Maybe Ben means something different in Huttese and Corellian or Alderaanian, but just coincidentally sounds the same (just as 'Ken' can be an Anglophone or Japanese name).

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Interesting to see how the First Order seems to maintain a more 'racist' policy, as all of them are human (just as with the Empire), whereas the Resistance, like the Rebellion, are a diverse mix of humans and non-humans. I wonder where this policy came from in the Empire, and it may not have even come from the Emperor. Palpatine himself didn't seem to discriminate against non-humans, as he surrounded himself with non-human aides (e.g. Mas Amedda etc.) when he was Supreme Chancellor. And of course, Darth Plagueis and Darth Maul were also non-humans. One theory I've heard is that while Palpy himself doesn't discriminate against non-humans, someone else with power in the Empire did, and passed a law that only allowed humans to serve the Empire. Palpatine may have approved, since he's not one to discourage hate and anger.

Also cool to see a greater range of diversity (both in terms of ethnicity and gender) among humans in both the First Order and the Resistance.