I'm not really sure which specific 'Knights of Nine' you are referring to in the Star Wars story. There are so many factions and groups in the Star Wars lore. It might be a very niche or newly created idea within the vast Star Wars fan - made content. Maybe it has something to do with a particular planet or a specific Jedi or Sith - related plot that is not widely known.
In the Star Wars universe, there are numerous groups with different names and purposes. However, the 'Knights of Nine' is not a common or widely recognized group in the official Star Wars canon. It could potentially be from a role - playing game, fan fiction, or some other form of non - official Star Wars media. If it's from a specific book or game, more context would be needed to accurately describe them. They could be a group of warriors, either Jedi - inspired or Sith - like, or perhaps something entirely different with their own unique ideology and abilities.
The Knights of Nine aren't a well - known canonical group in the main Star Wars universe. It could be a fan - created concept or something from an expanded, non - mainline Star Wars story. Without more specific information, it's hard to detail them precisely.