Power is a common theme. Often, it shows how Tony wields power over his thrall, and how the thrall either resists or succumbs to it.
Loyalty is another one. The fanfictions usually explore the loyalty of the thrall towards Tony, whether it's unwavering or has its limits. For example, in some stories, the thrall might question their loyalty when faced with moral dilemmas.
There's also 'Tony's Thrall: A New Beginning'. It delves deep into the relationship between Tony and his thrall, exploring themes like loyalty and power dynamics. It has an interesting plot where the thrall discovers new abilities while being under Tony's thrall.
Growth is also a prevalent theme. The kid has to grow up fast, deal with the expectations of being Tony Stark's child, and overcome various challenges, which makes for some really engaging and inspiring stories.
One common theme is legacy. Since Tony Stark had such a huge impact, his daughter often has to deal with living up to his name. Another theme is family, as she navigates her relationships with her mother (if present) and other family friends.
Another theme is protection. Steve, being Tony's dad, feels an even stronger need to protect Tony. This can lead to some intense action scenes where Steve puts himself in harm's way to keep Tony safe. It also shows the depth of his love for his son.
One common theme is the struggle for identity. Since Tony is Steve's son, he has to deal with the legacy of his father while also carving out his own identity. Another theme is family dynamics. There are often conflicts and reconciliations between them as they navigate their relationship.
Family relationships are also a big theme. These fanfictions explore how Tony Stark, being a busy superhero and genius, still manages to be a father. It shows the love, the arguments, and the growth within the family unit.
A common theme is the clash of values. Steve and Tony have different values in the original stories, and in the fanfiction, as father - son, this can lead to interesting conflicts. Another theme is growth. Steve grows up with Tony's guidance, and we see his character develop over time. And of course, the theme of love and support within the family unit is also frequently explored.
One common theme is the passing on of knowledge. Tony, being a genius, imparts his wisdom and skills to Harry. Another theme could be family drama, as Harry might struggle to fit into Tony's world or deal with the expectations of being his son.
One common theme is the clash of two different worlds. Harry comes from a world of magic and Tony from a world of technology. So, there's often a lot of exploration about how these two worlds can coexist or conflict when they are brought together through their brotherly bond.
One common theme is the clash and then the fusion of two different worlds - the magical world of Harry and the technological world of Tony. Another theme could be the father - son relationship development, showing how they learn to understand and support each other.