The Dark side corrupts all life around it and becomes addictive like a drug the more you are exposed or use it. Ashara is a woman in denial. She clings to the teachings of her past thinking herself a Jedi but is very angry and confused when other Jedi call her a fallen Jedi or Sith. She thinks that she is doing good in supporting the Inquisitor in changing the Empire into a more tolerant and even handed organization, but she is still supporting a Empire, founded on the tenet of the Sith. She kills Republic forces at your side furthering the goals of an organization that she hates to prove to the Jedi who rejected her that she was right in her beliefs. She is closer to being a sith than she realizes, and the reason she follows you is because she is too weak in her philosophy either way to truly be a power of her own.

In my opinion it would not be possible. The original four fingered Sith species was not initially compatible with the Human Jedi exiles that first arrived after the second great schism. Within the Book of the Sith and other sources we learn that one of the early Dark Jedi alchemists who created the Leviathans found a way to produce offspring from alchemical manipulation. None of the so called 'Pureblood' sith are pure blood. They all have five fingers far less severe features and the sith species traits are fading to a more human base. Who can say what alchemy was done to allow the two species to interbreed, but the effect is clear, human DNA and traits are dominant to Sith now. Perhaps if it were a human with with ancestry so far removed that they are practically pure human they would be able to breed with other near human subspecies. The Sith 'Purebloods' more than likely can only produce offspring with humans and other purebloods until their blood is fully diluted.

I do not usually post but I found this question interesting, as it pertains to my RL field of study. The answer IMHO is the effect of ethnocentric nationalism. In real world to have ethnocentric nationalism you often need key ingredients; shared unresolved historical trauma, race, and ideology. At the end of the Great Hyperspace War, the conflict that led the now Sith Empire to be created, the then Chancellor of the republic ordered the whole sale extermination of the Sith. Men, women, children, soldiers, civilians and force users alike. The refugees banded together under the Emperor Vitiate were unified by their racial ancestry i.e human and Sith species, shared trauma, and dark side ideology. The racism you see is direct result of this a sociological weapon the emperor used to forge a empire that would never forgive the republic and create a us vs them mentality that is to the very core of it's people.

Thank you for answering my post. I appreciate you taking the time on this issue.

The Series 510 cybernetic skull and in fact all helm pieces sharing its model do not fit a average sized male's head. The wire hovers outside of the skin at the cheek and barely enter at the neck. This issue does not seem to be shared with the Female variants or if the male avatar is the size and shape of the Hulk or Thor. It seems to be a sloppy oversight the simple fix would be to either remove the wires from the mesh or to simply extend them oh so much so that it can be universally worn. Not a serious bug to be sure but one that made me disappointed as I found the helm one of the coolest yet created in the Cartel Market