Initially, Harry might be hesitant to accept Fener as his father. But Fener, being eager to make up for lost time, would constantly try to be there for Harry. He could start by just being a friendly presence in Harry's life, helping him with small things. As Harry sees Fener's genuine care and the similarities between them in terms of their magical abilities and personalities, he slowly opens up. Eventually, they develop a deep father - son relationship, with Fener becoming a source of guidance and support for Harry.
At first, it might be filled with confusion and disbelief. Harry would probably be in shock to learn that Fener is his father. But as time goes on, they could start to build a bond. Fener might teach Harry new magic or share secrets about their family's past. They would gradually grow closer as they get to know each other better.
One possible plot could be that Harry has always felt a strange connection to Fener without knowing he is his father. Then, through a series of magical events, like a powerful spell gone wrong or a discovery in an ancient magical tome, the truth is revealed. This could lead to a journey of self - discovery for Harry as he tries to understand who Fener really is and how his father's identity changes his own life and his place in the wizarding world.
At first, it might be a bit awkward. Rose may not trust Harry easily as he's a stranger to her in a sense. But as time passes, if Harry shows his love and care constantly, like being there for her important events or helping her with her problems, they could start to have a closer bond.
At first, it could be very strained. Tom might be resentful or confused about having Harry as a father all of a sudden. But as time goes on, if Harry shows love and support, Tom could start to warm up to him. For example, Harry could help Tom with his schoolwork or magical training.
The relationship would be a rocky one. Snape has his past grudges against Harry's father. However, living together, they would be forced to interact daily. Harry might start to understand Snape's difficult past and Snape could see Harry's potential. There could be moments of anger, but also moments of mutual understanding, like when Harry helps Snape with some magical experiment.
At first, it would probably be very tense. Harry would be suspicious of Voldemort's motives, and Voldemort would be cautious of Harry's potential to rebel. But as time goes on, they might develop a strange sort of understanding. Harry could start to see Voldemort as more than just a pure evil figure, and Voldemort might start to view Harry as something more than an enemy.
In some fanfictions, their relationship might develop through a series of adventures. For example, they go on a journey to find out more about Harry's mother and how she was involved with Carlisle. Along the way, they have to rely on each other, communicate, and understand each other's strengths and weaknesses. This mutual discovery and dependence would lead to a more profound and complex relationship between them.
At first, it would be really awkward. They are from different worlds in a way. Harry is more into fighting dark wizards, and Newt is all about magical creatures. But as they are forced to be together due to the accidental marriage, they might start to respect each other's passions more. They could learn from each other, like Harry learning about magical creatures from Newt, and Newt learning some combat skills from Harry.
They could become even closer friends. After going through the war together, they have a deep bond. Maybe they start to rely on each other more than ever, sharing every little detail of their lives.
At first, Harry might be a bit skeptical of Peter's teachings. But as he sees Peter's skills and wisdom, he would start to respect him more. Their relationship could grow into a strong friendship based on mutual respect and shared experiences.
Their relationship could develop in a really interesting way. Since Aaron is used to dealing with complex personalities in the BAU, he would be patient with Harry. He'd start by just observing Harry, learning his habits and fears. As time goes on, he'd open up more about his own past and experiences, which would make Harry feel closer to him. They could also have some father - son adventures, like exploring hidden parts of Hogwarts together or facing off against some of the darker forces in the wizarding world.