I'm not sure specifically as it depends on the fanfic. It could feature well - known characters from the Mass Effect games like Shepard, who might interact with the slip drive technology in unique ways.
There could be new characters created specifically for the fanfic. These characters might be scientists or engineers who are trying to understand or improve the slip drive. They could be from any of the races in the Mass Effect universe, such as the Asari or the Turian. Their personal stories and goals would then be intertwined with the development and use of the slip drive.
One interesting concept could be the unique ways the slip drive is utilized in the fanfic. Maybe it's used for faster-than - normal travel to unexplored regions in the Mass Effect universe.
Some of the main characters might be Shepard, as he is a central figure in the Mass Effect series. There could also be other important characters like Liara T'Soni or Garrus Vakarian, who are well - known and beloved in the Mass Effect lore and are likely to be featured in the graphic novel to some extent.
I'm not entirely sure as I haven't read it fully, but it probably features Ryder, the main protagonist from the Mass Effect Andromeda game. They are likely central to the stories in the graphic novel as they are in the game.
It could be a mix of characters from both universes. There might be classic WW2 soldiers like Patton or Eisenhower, but with a Mass Effect twist. Maybe they have some kind of exposure to Mass Effect technology that gives them special abilities. Also, there could be Mass Effect characters like Shepard who are somehow transported to the WW2 era.
Obviously, Tevos is a main character. She's a significant figure in the Asari government. And then there are the OCs (original characters). These can be a wide variety of beings. It could be a human soldier who gets involved in Asari politics because of some incident related to Tevos. Or an alien scientist who teams up with Tevos to study an ancient Prothean relic. Each OC brings their own backstory, skills, and motives to the story.
I'm not entirely sure but it could feature some of the well - known characters from the Mass Effect series like Shepard.
A turian officer could be a great main character. They are known for their military discipline and honor, and seeing the war from their perspective would be interesting.
Commander Shepard is also very popular. Bringing Shepard into the Harry Potter world could lead to some exciting adventures. Shepard's leadership skills and combat experience would be interesting to see in the context of Hogwarts and the wizarding world. They might take on the Dark Arts or help protect the school in a different way.
Shepard from Mass Effect could be a main character. They could lead the XCOM forces in a joint mission against a common enemy. Their leadership skills would be very useful in coordinating the two very different groups.
The main characters are Naruto and Jack, but the fanfiction could also introduce new characters that are a blend of the two universes. For example, there could be a character who has both chakra - like Naruto - and biotic abilities - like Jack. This new character could be the result of some experiment gone wrong or a natural occurrence in the combined universe of the fanfiction. And of course, there would be various antagonists, such as the usual bad guys from the Mass Effect universe who see Naruto as an unknown and dangerous variable, and perhaps some of Naruto's enemies from his own world who have also found their way into the Mass Effect universe.