Maybe his overprotective nature is seen as a bad trait. He tries to shield his kids from the dangers of the world, but in doing so, he might not allow them to grow and learn from their own experiences. He could be making all the decisions for them without considering their opinions, which would make him seem like a bad father.
His superhero lifestyle might also contribute to this view. He's constantly in danger and involved in battles. This could make his children feel worried all the time and also leave them feeling like they're second priority. His kids might need a more stable and present father figure, but his superhero duties often take him away from home.
It might show a distant relationship. Tony could be physically present but mentally absent, not really engaging with his children on a deep emotional level. For instance, when they try to talk to him about their day, he might be half - listening while still thinking about his latest Iron Man upgrade.
There could also be fanfictions where Tony Stark kills himself because he fears his technology falling into the wrong hands. He's created so many powerful inventions as Iron Man. If he feels that there's a real threat of someone misusing his technology to cause even greater harm, he might choose to remove himself from the equation completely to prevent that from happening.
In fanfiction, the idea of Tony Stark being Spiderman's father can create some really interesting memes. For example, there could be memes showing Tony giving Peter (Spiderman) some high - tech gadget while making a funny, fatherly comment. It adds a new dimension to their relationship.
One reason could be that he's frustrated with the leadership or the direction the Avengers are taking in the fanfiction. He might feel his ideas are not being heard.
Guilt. For example, if he fails to save someone he cares about. He'll feel responsible and that could lead to him crying.
In fanfiction, emotional distress can also be a factor. If something really bad happens, like the loss of a loved one or the destruction of his work that he has put so much effort into, the shock and grief could be so overwhelming that he faints. Additionally, he could be suffering from some hidden illness that flares up suddenly and causes him to faint.
Maybe he doesn't fully understand his powers yet. Tony Stark is a scientific genius, but new powers might be beyond his current understanding. He could be worried that if he reveals them too soon, he won't be able to control them properly and might cause harm. So, he chooses to hide them while he studies and figures them out.
There are a great number of fanfictions where Tony Stark is Peter Parker's father. This is because their relationship in the official Marvel universe is already somewhat of a mentor - mentee one. Fanfiction writers take it a step further. For example, in some stories, Tony discovers he has a biological connection to Peter. In others, it's more of an emotional father - son bond that develops over time through shared experiences, like fighting villains together or working on new tech in the Stark labs.
One aspect of this in fanfiction could be Tony Stark giving Spiderman some fatherly advice, which can be turned into a meme. For instance, a meme with a picture of Tony looking serious while Peter is listening intently.
In crossover fanfiction, Tony Stark as a father can bring really interesting dynamics. For example, if it's a crossover with the X - Men universe, his scientific mind could clash or collaborate with Xavier's in terms of how to raise a mutant child. He might use his high - tech gadgets to protect his child from the dangers of a world that fears mutants.