I'm not sure specifically who the main characters are without reading it, but it could be some Sith lords or characters on the verge of turning to the dark side.
Without having read 'Star Wars A Dark Path Part 2 Short Stories' in full, it's difficult to say for certain. However, in the Star Wars universe, when dealing with the dark side, characters such as Sith apprentices often play significant roles. So, there could be new Sith apprentices as main characters, learning the ways of the dark side, or perhaps Jedi who are starting to be lured by the dark side. It could also include some of the more shadowy figures in the Star Wars underworld who have connections to the dark side and are involved in the events of these short stories.
We can expect more in - depth exploration of the dark side in the Star Wars universe. It might show the fall of certain characters, new and complex villains, and perhaps some unexpected plot twists related to the dark path.
Darth Vader can be a main character too. His internal struggle between the light and dark side, as well as his power and influence in the Galactic Empire, make for great storytelling. The short stories might explore his past, his relationship with the Emperor, or his encounters with other key characters.
As there is no official 'Dark a Star Wars Story', it's difficult to say who the main characters would be. But if it were a dark - themed story, it might feature Sith lords like Darth Vader or Darth Maul as central characters, as they represent the dark side of the Force in the Star Wars universe.
Revan is a significant character in some of these novels. He has a very complex backstory, having once been a Jedi and then falling to the dark side and back again. Also, characters like Darth Sidious play a major role as they are often the main antagonists in the 'dark' storylines.
Droids are also likely to be main characters. For example, a protocol droid with a unique personality might be central to a story, navigating the complex social and political situations in the Star Wars galaxy, while also dealing with its own mechanical and programming - related issues.
Smugglers like Han Solo - type characters might be main characters too. Their adventures in hyperspace, whether it's evading the authorities or finding valuable cargo, can be the focus of the stories.
The main characters include Luke Skywalker, Emperor Palpatine, and Leia Organa. Luke has to face Palpatine's new threat, and Leia is involved in the political and military affairs of the New Republic.
Kyle Katarn is a main character. He plays a crucial role throughout the series, with his journey being central to many of the stories.
Quinlan Vos is one of the main characters. He is a Jedi with his own set of skills and a complex personality. Asajj Ventress is also a major character. She has a dark past and her own motives which often put her at odds with the Jedi. Their relationship is central to the story as they are forced to work together at times.
Given that we know so little about it, it's difficult to determine the main characters. However, in a Star Wars story with 'dark legacy' in the title, there might be a fallen Jedi as a main character. This Jedi could have turned to the dark side due to some tragic event or the temptation of power. Or it could be a new character created specifically for this story who is somehow tied to an ancient dark legacy in the Star Wars galaxy.