Another possibility is that Death is being controlled or influenced by a greater cosmic entity. In this case, that entity could be the main antagonist. It uses Death as a tool to test or destroy the Avengers. The Avengers would then have to not only deal with Death but also find a way to face this more powerful and mysterious entity behind Death's actions.
In 'death meets the avengers fanfiction', a possible plot could be that Death is personified as a female figure. She comes to Earth because she's bored in her realm. She starts causing chaos among the Avengers by making their powers malfunction. The Avengers initially think it's a new super - villain but soon realize it's Death. They then have to find a way to either send her back or make a deal with her. Maybe they offer to perform a great deed in exchange for her leaving Earth and their lives alone.
In this fanfiction scenario, Matt Murdock could bring a whole new dynamic to the Avengers. His skills as Daredevil, like his enhanced senses and combat abilities, would be quite an asset. Maybe he'd initially clash with some of the more brash members due to his more reserved nature. For example, he might have a bit of a tense encounter with Tony Stark at first, but over time they could learn to respect each other's strengths.
Well, it could be really chaotic. Draco's slytherin ways might clash with the Avengers' hero complex. He might try to manipulate the situation for his own gain, but the Avengers would likely see through his tricks.
The Avengers as a whole would likely be outraged at the idea of someone being abused. Captain America would lead the charge in trying to bring the abusers to justice. The team would come together to not only protect the reader physically but also help them heal emotionally. They would surround the reader with love and support, showing them that there are good people in the world who will fight for them.
The Avengers' reaction would depend on how Eddie presents himself. If he comes in peace, some like Thor might be more open - minded. Thor has seen all sorts of strange creatures in the nine realms, so the symbiote might not seem too outlandish to him. However, Hulk might be more aggressive towards Eddie, seeing him as a potential threat to his 'family' (the Avengers).
In many Avengers fanfictions where Tony dies, it's often a heart - wrenching scenario. One common plot is that he sacrifices himself heroically to save the world one last time, much like in the movies. His death leaves a huge void in the Avengers team, and his friends are left to deal with the grief and the aftermath. It makes for some very emotional and poignant stories as his character was so central to the Avengers' narrative.
One possibility could be Doctor Strange. With his vast knowledge of the mystic arts, he might stumble upon the power of the 'Master of Death'. His already existing powers over magic and the multiverse could be a stepping stone to this even greater power.
Thor would be the most likely to relate to her on some level, as he comes from a world of gods and magic too. He might see her as an equal in a way. Bruce Banner would be interested in the scientific aspect of how her powers work, if there is any scientific explanation within the context of the fanfiction. And the others like Clint Barton and Wanda Maximoff would be curious about her background and how she ended up in their world.
Gabriel could bring a new perspective to the Avengers. Since he's not from their world, he might see things in a different light. He could help them deal with threats that are more otherworldly in nature. He might share knowledge about different realms and entities that could be useful for the Avengers to protect the Earth more effectively. He could also be a source of comic relief, with his different ways of interacting with the high - tech and super - powered world of the Avengers.