There could also be a young trainee or a reserve player who looks up to Harry. Harry could help this person develop their skills, and in return, this young player could offer Harry fresh perspectives and a lot of enthusiasm, which would boost the team spirit within the Tutshill Tornados.
In a 'harry plays for tutshill tornados' fanfiction, the plot could be centered around the team facing a major crisis, like a series of losses. Harry then takes on the role of a leader, inspiring his teammates with his positive attitude and innovative playing strategies, and leading the Tutshill Tornados to a great comeback.
In the fanfiction, Harry might find allies among the ghosts in Hogwarts. Since he is the son of Hades, he could have a special connection with them. They could provide him with information and support. Another potential group of allies could be the outcasts in the wizarding world. People who have been shunned or misunderstood might be drawn to Harry because they see him as a fellow outcast due to his new identity. And there's also a possibility that some of the more rebellious students at Hogwarts, who are not afraid to go against the norm, would become his allies and help him face the challenges that come with being the son of Hades.
The Weasley twins could also be potential allies. They are always up for some mischief but also have a good heart. They could use their creativity and knowledge of Hogwarts' secrets to help the fem Harry Potter in her journey as the heir. For example, they could help her find hidden areas of the school where she might learn more about her heritage.
Hermione would definitely be one of his allies. She is smart and would be able to help him research about his new identity and how to control his powers. For example, she could find ancient texts in the Hogwarts library that relate to both the wizarding world and the Greek gods.
His friends from Hogwarts could still be his allies. Hermione would use her intelligence to help him understand his new situation. Ron would be there for moral support. Additionally, any friends or allies that Rias has in her world could also become Harry's allies. They might be magical creatures or other powerful mages.
Hermione would definitely be an ally. She's smart and would be able to help Harry research about his 'son of Mars' heritage, finding ancient spells or texts that could explain it further.
In this fanfiction, some of the potential allies for Harry could be the magical creatures that have a connection to Norse mythology. For example, the Valkyries. They could help Harry in battles or in understanding his new heritage. Another ally could be Odin, Frigga's husband. Despite the initial shock of Harry's existence, he might see the value in Harry and offer his protection and guidance. And don't forget Neville. He's always been a loyal friend to Harry, and in this new scenario, he would continue to be an ally, perhaps even more important as Harry faces new and different challenges.
One potential ally could be Hagrid. Hagrid has always been a friend to Harry, and in this fanfiction, he could help Harry understand his newfound heritage as the son of Hephaestus. Hagrid's knowledge of magical creatures could also be useful in Harry's adventures related to his Hephaestus - given abilities.
Definitely Dumbledore, if he were still alive. He was always a guiding figure for Harry. He could use his wisdom and influence in the wizarding world to ensure that Harry gets the justice he deserves. Also, Neville could be an ally. Neville has grown into a strong and brave character, and he would stand by Harry, offering his loyalty and friendship during this difficult time.
Some potential new allies could be the house - elves. They might see Harry's plight and decide to help him, using their unique magic and knowledge of Hogwarts' secrets. Another could be the centaurs in the Forbidden Forest. They are very wise and may take Harry under their wing.