There might also be some characters from Charlie's side, like his colleagues at the dragon reserve. Their presence could add more depth to the story, for example, they could be the ones who first notice the special connection between Harry and Charlie.
Well, clearly Harry and Inutaisho are the main characters. Harry, who we might assume has his own set of characteristics from his original story, and Inutaisho, who presumably has his own backstory and personality within the context of this fanfiction.
Obviously, Harry would be one of the main characters. And Poseidon, as Harry is his mate. There might also be other characters from the Harry Potter universe, like Hermione and Ron, who could be involved in some way. Maybe they help Harry understand his new situation or they are affected by the changes in Harry's life due to his connection with Poseidon.
The main characters are Harry and Sesshomaru. But we can't forget about Dumbledore, who might play a role in Harry's journey to Sesshomaru's world. Maybe he has some knowledge about this strange connection and gives Harry advice before he goes. On Sesshomaru's side, his half - brother Inuyasha could also be involved. He might be suspicious or even hostile towards Harry at first, but then come to accept the relationship as he sees how it changes Sesshomaru for the better.
Obviously, Harry and Emmett are the main characters.
Harry, who is known for his courage and his connection to Voldemort. George, one of the Weasley twins, is famous for his pranks and his business acumen. Their mate could be someone who bridges their different personalities. Maybe it's a student from another house who has different magical skills and perspectives, which enriches their group dynamic.
Obviously, Harry and Moony (Remus Lupin) are the main characters. Harry is the central figure in the Harry Potter series, and here he has a special relationship with Moony.
The main characters are Harry and Percy. Harry, with his Gryffindor courage and magical skills, and Percy, perhaps with his own distinct powers and personality. In this fanfiction, their relationship as mates is the core element, and other characters may be introduced to either help or hinder their bond - forming process.
Obviously, Harry and Gabriel are the main characters since Harry is said to be Gabriel's mate.
The main characters are clearly Harry and Jasper. Harry is likely to be a character with his own set of traits, perhaps brave and curious. Jasper, on the other hand, may have characteristics that complement Harry's. They are the central focus as they are the ones in the mate relationship.
There might also be Harry's friends like Ron and Hermione. They would play important roles as they react to Harry's new relationship. They could offer support, or in some cases, be a bit skeptical about the whole veela - mate thing. Their reactions can add depth to the story and show different perspectives on this rather unusual situation.