Another theme is the power of technology. Tony is a technological genius, and his tech often comes into play when dealing with Bucky. Sometimes it's about fixing Bucky's arm, other times it's about using tech to help Bucky deal with his mental programming. In some fics, they might even create new tech together, which shows how their skills can combine.
Friendship or begrudging respect is also a big theme. Given their different backgrounds and initial animosity in some cases, seeing them develop a friendship or at least respect each other is a common thread. They learn to see past their differences and work towards a common goal, like protecting the world from new threats or uncovering secrets about Bucky's past that could endanger everyone.
One common theme could be redemption. Maybe the Winter Soldier is trying to make up for past actions and forms a bond with Tony during that process. Another might be trust - building as they overcome their initial differences.
One great fanfiction could be where the Winter Soldier and Tony Stark are forced to team up. In this story, their initial distrust gradually turns into respect as they face a common enemy. They learn from each other's skills, with Tony's tech knowledge and the Winter Soldier's combat abilities complementing each other.
The 'mystery connection' trope is also seen a lot. This is where there is some hidden link between the two characters, like a shared enemy from the past that they don't initially know about. As they uncover this mystery, their relationship evolves and they become closer, whether it's as friends or something more.
One great Tony Stark Winter Soldier fanfiction is 'The Unlikely Alliance'. It shows an interesting scenario where Tony and Bucky have to work together against a common enemy. The story is full of action and also explores their complex relationship.
They could go on a mission to stop a group of tech - thieves. Kid Tony Stark uses his inventions to track the thieves, while the Winter Soldier uses his combat skills to take them down. Another adventure could be exploring an abandoned Hydra base. The Winter Soldier has some knowledge of the layout, and Tony's scientific expertise helps them understand and deal with any hidden traps or dangerous experiments left behind.
One common theme is redemption. Since the Winter Soldier has a dark past, many fanfictions focus on him trying to make up for what he's done. Another is his struggle with identity, as he's been through so much that he often doesn't know who he really is.
In an alternate universe, their interaction could be really interesting. Kid Tony Stark, with his brilliant mind even at a young age, might be both intrigued and a bit intimidated by the Winter Soldier. He'd probably be eager to figure out the technology behind the Winter Soldier's enhancements, while the Winter Soldier could see in Tony a potential for good or bad, depending on how his powers are used. Their dynamic could start off as wary but gradually turn into a begrudging respect as they realize they both have their own moral compasses.
Well, there are several common themes. Resistance is one. Tony Stark is a strong - willed character, and in these fanfictions, he usually resists Hydra's attempts to take over or manipulate him. Also, the exploration of power is common. How Hydra wants to use Stark's power, and how he uses his power to fight back. And secrecy, as Hydra operates in the shadows and Stark has to uncover their plots.
Another theme is mentorship. Tony Stark sometimes takes the young fans under his wing, guiding them through difficulties and teaching them valuable lessons. It's like a passing - on - of - the - torch kind of thing. For example, in some fanfics, he helps the young ones understand the responsibilities that come with great power and intelligence. Also, there's often a theme of adventure. The young fans get to be part of exciting adventures with Tony Stark, like fighting bad guys or exploring new technologies together.
Love and friendship are also big themes. The OC might fall in love with Tony or form a really deep friendship with him. For example, there are stories where the OC is the only one who truly understands Tony during his dark times. And then there's the theme of power. How the OC deals with Tony's technology and power, or even develops their own powers in some cases, is often explored.