Sorry, I don't have a definite answer for you. It's possible that Avengers Doomsday draws inspiration from multiple comic sources or is a completely new creation.
A frequent plot in Batman vs Doomsday fanfiction is the exploration of Batman's limits. How far will he go to stop Doomsday? Will he cross moral lines? There are also stories where Doomsday is brought to Gotham by a villain who wants to see the city destroyed. Batman then has to protect his city against this seemingly unbeatable foe. Some fanfictions also play with the idea of Doomsday having a connection to Batman's past, like being related to an old case or an experiment Batman was involved in.
Superman is extremely powerful on his own. His powers are almost god - like. But the Avengers have a lot going for them too. For example, Iron Man has his high - tech suits which can adapt to different threats. Captain America is a great strategist. In a fanfiction, it could depend on the circumstances. If it's a fight in an environment full of kryptonite, the Avengers would have an advantage. But in a normal battle, Superman's power might be too much for the Avengers to handle all at once.
Well, Superman might use his super strength and flight to take on the Avengers. Maybe he'd go up against Thor first, with their super strength and lightning powers clashing. It could be an epic battle.
In a 'naruto vs avengers fanfiction', there could be a lot of chaos. Naruto's ninja skills like shadow clones and rasengan would be pitted against the Avengers' superpowers. For example, Naruto might try to use his speed to dodge Thor's hammer throws. It would be a battle of different fighting styles and power sources.
Perhaps there is a powerful artifact that both Spiderman and the Avengers are after. They end up in a conflict over it. Spiderman, with his street - smart ways, tries to outwit the Avengers and get the artifact for himself, believing he can use it for good in his own way.
It's really hard to say who would win in a 'naruto vs avengers fanfiction'. Naruto is extremely powerful with his ninjutsu and his ability to summon large toads. But the Avengers also have their own powerful members like Captain America's leadership and combat skills, and Thor's godly powers. It could go either way depending on the situation.
It's really hard to say. Goku has his amazing fighting abilities and power-ups. But the Avengers have a lot of different powers and strategies. If the fight takes place in the Marvel Universe, the Avengers might have some home - field advantage. However, Goku's adaptability and his ability to quickly learn in battle could give him the upper hand. Maybe it would end in a draw if both sides respect each other's power and stop the fight before it goes too far.
In a 'Goku vs Avengers' fanfiction, Goku's extreme power levels would be a major factor. His Super Saiyan forms could potentially overpower many of the Avengers. However, the Avengers have their own unique skills and teamwork. Iron Man could use his high - tech suits to analyze Goku and try to find weaknesses. Captain America would lead the team in terms of strategy. But Goku's speed and strength might be too much for them to handle in the end.
In a 'darkseid vs avengers' fanfiction, it could go many ways. Maybe the Avengers' teamwork and diverse powers would give them an edge. For example, Thor's lightning and Hulk's strength could be used in a coordinated attack against Darkseid.