Nico and the avengers
Nico Di Angelo from Percy Jackson by rick riordan and the Avengers fron Marvel Crossover.
There not that much nico and the avengers crossovers on here so here it goes......The Greek monsters are now under control of Loki, the god of mischief. Camp half blood and Camp Jupiter are currently at war and are unaware of the upcoming battle. This is where Nico DI Angelo comes in. He is the son of Hades, a natural solo, loner, and doesn't spend much time at either camps or around any one. He starts to notice that there is a lot of monsters around lately and fends them off, not aware that these small street fights are just the beginning, and one he cant fight alone.
The avengers know of Loki's intentions, but even Thor doesn't know anything about the monsters. They are unable to figure out their weaknesses or anything about them. They then take notice of Nico and know that they need help.