It could be Harry Potter himself, but with enhanced combat skills and new magical abilities. He might be the one leading the fight against new threats in the wizarding world.
In some versions, there could be a love interest for the heir of God. This character could add another layer of complexity to the story, as the heir has to balance their relationship with their quest for knowledge about their identity and the use of their powers.
Obviously, Harry Potter would be one of the main characters as the title implies he is born a god. Hermione and Ron are likely to be important characters too, as they are Harry's closest friends in the original series. There could also be new characters introduced, perhaps other powerful wizards or magical creatures who either help or oppose Harry in his new, god - like state.
I don't know for sure since I haven't read this particular fanfiction, but it could be Harry Potter himself, or perhaps a new character that the author has introduced to have these god - like powers.
Since I haven't read it, it's hard to say exactly. But based on the title, Harry Potter and his'mate' who is a god - like figure are likely to be main characters.
Ron Weasley could also be a key figure. He might be Harry's loyal friend as always, standing by his side during all the changes that Harry is bringing about in the wizarding world as a god. And there could be new characters introduced as well, perhaps other gods or magical beings that interact with Harry in this new fanfiction realm.
In many 'Harry Potter God of Death Fanfiction', Albus Dumbledore can be a significant character. Given his vast knowledge and power in the original series, he might have some prior knowledge or connection to the God of Death. His wisdom could be used to guide the younger characters in dealing with this new and dangerous entity. Additionally, characters like Severus Snape could also be involved. His complex nature and his own experiences with death could make him an interesting addition to the story when it comes to interacting with the God of Death.
In a lot of 'Harry Potter Demon God Fanfiction', Dumbledore can be a major character. He might have some prior knowledge about the demon god and guide Harry in the right direction. Sometimes, new characters are introduced, like a powerful wizard from a far - off land who has had past encounters with the demon god and teams up with Harry. And of course, the villainous characters like Voldemort or his Death Eaters might also be involved, either trying to use the demon god for their own gain or being caught in the crossfire.
Typically, Harry Potter would still be one of the main characters, but his role would likely be significantly altered due to the presence of the 'god emperor'. The 'god emperor' himself would be a central figure, of course. Hermione Granger might also be a main character, as she often plays a crucial role in the original series and would likely be involved in the new power structure. Ron Weasley could also be there, perhaps as a supporter or an opponent of the new regime.
Another plot might be that a character from the fanfiction gains the ability to control time during combat. This would lead to really complex and exciting battle scenes, as they can rewind or fast - forward time to outwit their opponents. They might use this power to save their friends from certain death in a battle against a powerful dark force.
Nymphadora Tonks is also a great candidate. She's a Metamorphmagus, which means she can change her physical form. In hand - to - hand combat in fanfiction, she can use this ability to surprise her opponents. For example, she could suddenly make her limbs longer to reach further or make her body more flexible to dodge attacks more easily.