There are fanfictions that focus on the relationship aspect during Tony's palladium poisoning. For example, Pepper might play an even more crucial role. She could be the one to find a solution or at least be the emotional support that helps Tony fight through the physical and mental effects of the poisoning. It shows a different side of their relationship and how they rely on each other in tough times.
Some fanfictions might explore the idea of Tony Stark reaching out to other superheroes for help with the palladium poisoning. He could call on Bruce Banner, for instance. They could work together in a makeshift lab, combining their scientific knowledge. Banner might offer a different perspective on the poisoning since he has his own experience with a body - altering condition, which would make for an interesting read.
One great fanfiction could be where Tony Stark discovers a unique way to counter the palladium poisoning on his own. Maybe he uses his genius to quickly develop a new element, much like in the movies, but this time with a lot more self - discovery and internal struggle. He could have hallucinations due to the poison that lead him to question his life choices and relationships, adding a lot of depth to the story.
Fanfiction sometimes takes a more creative approach. For example, the palladium poisoning could give Tony new powers or abilities that he has to learn to control. Or, it could be linked to some sort of ancient prophecy or mystery that he has to solve in order to cure himself. This adds an element of mystery and adventure to the story of his poisoning.
There could be a fanfiction where Iron Man's palladium poisoning is a catalyst for him to explore alternative power sources more aggressively. In this story, he could be depicted as going through a series of dangerous experiments, all while his friends are worried about his deteriorating health due to the poisoning. For example, he might be so desperate that he ventures into uncharted scientific territories, leading to both exciting and dangerous encounters.
One great fanfiction about Tony Stark's father could be 'Howard's Legacy'. In this fic, it might explore Howard Stark's early days in building Stark Industries and how his decisions then affected Tony later. It could show Howard's relationships with other scientists and his vision for the future that Tony eventually inherits. Another interesting one could be 'Father and Son: Unseen Bonds' which might focus on the emotional connection between Howard and Tony that was not fully explored in the movies. It might include flashbacks of Howard teaching a young Tony about engineering and the values he wanted to pass on.
I'm not sure about a specific one off the top of my head, but you can start by looking on fanfiction websites like Archive of Our Own. Just search for 'Iron Man palladium poisoning' and you're likely to find some interesting reads.
A really interesting 'Tony Stark Alone' fanfiction is when he's alone on an alien spaceship. He has to figure out how to navigate the ship, avoid the alien crew (if they're hostile), and find a way to communicate with Earth. It shows his skills not just as an engineer but also as a diplomat in a sense. He has to use his charm and intelligence to survive in a completely alien environment.
One great Tony Stark and Enchantress fanfiction is 'A Mysterious Alliance'. It explores an alternate universe where they team up to fight a new threat. The story has great character development and action scenes.
One great Tony Stark concussion fanfiction is 'Recovery Road'. It focuses on how Tony deals with the after - effects of a concussion during a crucial time for the Avengers. The story really delves into his character, showing his vulnerability and determination at the same time.
One great 'Tony Stark and the Youngest Avenger' fanfiction could be where the youngest Avenger is a super - powered kid who Tony takes under his wing. Maybe the story focuses on Tony teaching the youngster about technology and how to use their powers responsibly. For example, if the youngest Avenger has telekinetic powers, Tony might design special gadgets to enhance those powers while also instilling in them the values of the Avengers.
Some fanfics might take a more psychological approach to Tony Stark's panic attacks. They could explore the inner workings of his brilliant but often troubled mind. In one such fanfic, Tony might be in the middle of a scientific breakthrough when suddenly, memories of his father's coldness and his own self - doubts trigger a panic attack, and the story then unfolds as he battles with his own mental state.
One great fanfiction could be 'Healing Iron Man' which delves deep into Tony's PTSD. It shows his struggle with nightmares and flashbacks in a very realistic way. The author does a wonderful job of portraying how his friends like Pepper and Rhodey try to help him through it.