Yes, Darth Revan did fight against Darth Nihilus. In the video game "Star Wars: Knights of the Old Republic II - The Sith Lords," Revan and Nihilus are both prominent characters. They come into conflict as part of the game's storyline, with Revan ultimately facing off against Nihilus in a climactic battle. Their confrontation is a significant moment in the game's narrative and adds to the lore of the Star Wars universe. **

Revan's midi-chlorian count is not explicitly stated in the Star Wars canon. Midi-chlorians are microscopic organisms that exist within the cells of all living beings and are used to measure an individual's connection to the Force. While Revan's midi-chlorian count is not known, he was a highly skilled and powerful Force user, demonstrating exceptional abilities in both the light and dark sides of the Force. His strength in the Force was evident in his ability to influence others and his skill in lightsaber combat. **

Revan's alignment as a Sith or Jedi is a matter of interpretation, as he was a complex and morally ambiguous character. As a Sith, Revan was a powerful and ambitious leader who sought to conquer the galaxy, but he also had a sense of honor and a desire to protect the galaxy from greater threats. As a Jedi, Revan sought redemption and worked to bring balance to the Force, but his methods were often controversial and morally gray. Ultimately, whether Revan was a "good" Sith-Jedi depends on one's perspective and interpretation of his actions and motivations. **

Yes, there is a book that continues the story of Darth Revan. The novel "Star Wars: The Old Republic - Revan" by Drew Karpyshyn follows the character of Revan after the events of the video game "Star Wars: Knights of the Old Republic." In the book, Revan embarks on a new journey to confront a powerful Sith threat and uncover his own forgotten past. The novel delves deeper into Revan's character and explores his struggles with the light and dark sides of the Force. **

Yes, there is a difference between nobility and elegance. Nobility typically refers to a person's social status or rank, often associated with titles and hereditary privilege. On the other hand, elegance is more about grace, refinement, and sophistication in one's appearance, behavior, or style. While nobility can be a factor in someone being perceived as elegant, elegance can be achieved by anyone regardless of their social status. **

Elegance is a combination of simplicity, grace, and refinement. It is about being stylish and sophisticated without being flashy or overdone. Elegance can be seen in the way someone carries themselves, in their mannerisms, and in their choice of words and actions. It is a timeless quality that exudes class and charm. **

An aristocracy is a form of government or social system in which a small, privileged elite holds power and influence. This elite class is typically made up of wealthy and noble families who inherit their status and often have hereditary titles and land ownership. In an aristocracy, political and social power is concentrated in the hands of this small group, and they often have significant control over the resources and decision-making processes of the society. Historically, aristocracies have been common in many societies, particularly in feudal and monarchic systems. **

I think the most powerful Sith of all time in the Star Wars universe is a matter of personal interpretation. However, Darth Revan, Exar Kun, and Lord Vitiate are certainly strong contenders. Darth Revan was a skilled strategist and powerful Force user, while Exar Kun was known for his mastery of Sith magic and manipulation. Lord Vitiate, also known as Emperor Valkorion, was incredibly long-lived and had the ability to consume entire planets with the Force. Each of these Sith Lords left a significant impact on the galaxy and their power is undeniable. **