Often, the fanfictions involve Tony relying on his network of contacts. He might call in favors from other scientists or even some minor characters from the Marvel universe. There's also the aspect of him sacrificing something, like his own safety or his reputation, in order to save the Avengers. And of course, there are epic battle scenes where Tony uses his Iron Man tech to fight off the enemy and protect his teammates.
One popular 'Tony Stark saves the Avengers' fanfiction is 'Stark's Redemption'. In this fic, Tony uses his brilliant mind and advanced technology to rescue the Avengers from a powerful and mysterious enemy. He creates new gadgets on the fly and outsmarts the foe.
One common theme is loyalty. Peter feels a deep loyalty towards Tony as his mentor and friend, and this drives him to save Tony in these stories. For example, in many fanfictions, Peter will risk his own life without hesitation when Tony is in danger.
One possible plot twist could be that Kraglin saves Tony, but it turns out Tony was set up as bait by a powerful enemy. So, instead of being out of danger, they are now both in the crosshairs of an even greater threat.
Well, one possibility is that the girl could be in danger from some villains. Tony Stark, being the hero he is, swoops in with his Iron Man suit. Maybe she's running from a group of bad guys who are after her for some secret she holds. Tony spots her while flying by and uses his repulsors to fend off the attackers, then takes her to safety.
In a 'Percy Jackson Saves Tony Stark' fanfiction plot, Stark could be on a mission in a remote area that has some hidden mythological secrets. He unknowingly awakens an ancient evil. Percy Jackson, who is nearby on a quest of his own, notices the disturbance. He races to save Stark. Percy has to deal with his own personal demons as well as the new threat. He saves Stark by using his demigod powers in creative ways, like using the water in the environment to create shields or using his ability to read ancient languages to decipher a way to stop the evil. After that, they join forces to make sure the area is safe again and Stark is inspired by Percy's world to create new tech that can detect and deal with mythological threats.
Well, I really like the fanfiction 'Tony Stark's Ultimate Sacrifice'. It's a heart - wrenching story where Tony has to make a huge sacrifice to save the Avengers and the world. The way it's written really captures the essence of his character. 'Avengers: Tony's Clone Dilemma' is also quite engaging. Here, a clone of Tony is created and the Avengers have to figure out if it's friend or foe. It plays with the idea of identity and loyalty. And 'The Iron Man and the Alien Alliance' is a story where Tony teams up with an alien race to help the Avengers in a fight against a common enemy. It has some really cool alien technology and battle scenes.
Yes, it's possible that Tony Stark, as a character, could be the subject of Avengers fanfiction that he might 'watch' in the sense of being a character within the fictional scenarios written by fans. However, in the official Marvel universe, there's no indication of him actually reading Avengers fanfiction.
Hidden Midgard in a Tony Stark Avengers fanfiction could be a really cool concept. It might be a parallel dimension of Earth that has a connection to Asgard or some other alien realm. Tony Stark, with his curiosity, might be the first to suspect its existence. He could then use his Iron Man suit and all his tech gadgets to find a way to access it. Once there, he might find new allies or enemies, and this discovery could change the course of the Avengers' battles and their overall story.
In a Tony Stark Avengers toy fanfiction, imagine the toys are actually miniaturized versions of the real heroes. Tony Stark's toy is the most advanced. It can repair the other toys when they get damaged. A villain tries to steal the Stark toy to reverse - engineer its technology for evil purposes. The other toys, with the leadership of the Stark toy, must fight to protect themselves and the world from this threat.
She could be kidnapped by a villain who wants to use her as leverage against Tony Stark and the Avengers. So the Avengers have to work together to rescue her. During the rescue mission, they discover some new abilities she has that she didn't even know about herself.