This fanfiction is based off the ending of Avengers Infinity War. I'm using Harley Keener from Iron Man 3 as the main character because he may/may not appear in Avengers Endgame. Avengers is (obviously) owned by Marvel.
Harley was devastated. He watched before his eyes, people were disappearing. Harley was in the middle of the street. Half the kids of his school were being turned to dust. Harley had no idea that this effect of people disintegrating was caused by a mad Titan named Thanos. Thanos snapped his fingers inside a gauntlet with Infinity Stones. Thanos's snap caused 50% of the Earth's population to disintegrate. Harley is a 15 year old boy. He met Tony Stark A.K.A. Iron Man 5 years ago. Tony crashed at Harley's apartment. Harley encountered Tony in his living room. He was armed with a potato gun. Harley still has his potato gun. Harley went into his garage. Over the course of 5 years since he met Tony Stark, Harley had managed to build himself a gold and silver Iron Man suit. Harley even had an Arc Reactor on his chest. Don't ask me how he managed to put the Arc Reactor in his chest. Harley grabbed his potato gun. He then put on his Iron Man suit. Harley knew that the suit was going to have a long time putting on. So, he devised a system for putting on the Iron Man suit very quickly. Basically he copied what the Iron Man Mark 42 did. The Iron Man suit parts automatically were put on his skin very fast. Think of Harley as a magnet and that magnet had a strong polarity. Harley had a small microchip implanted in his arm that allowed him to "communicate" with the Iron Man suit. The parts of the Iron Man suit clung to Harley like a magnet. Soon Harley was in his Iron Man armor. Harley was able to see everything from within the Iron Man suit. He exited the garage. Suddenly, a portal opened up out of nowhere and sucked Harley in.
Zootopia. Daytime
In an alternate dimension, there was a city called Zootopia. In this world, humans never existed. Instead anthropomorphic animals existed. They were categorized by two groups: Predator and prey. Zootopia was a place in which nearly everybody was a mammal. Predator and prey lived together in harmony. All was well until a portal opened up in the sky out of nowhere. A 15 year old boy fell out of the portal. He was wearing a strange suit of hi tech armor. Harley activated his repulsor rays so that way he could fly. The animal people were amazed. Harley landed on the ground in front of the animal people. Harley was shocked.
Harley P.O.V.
I was shocked. One minute, I had to deal with people disintegrating before my eyes. Next minute, I get sucked into a portal in my Iron Man suit that I spent 5 years making. I end up in a world where humans were replaced by animals. "Hi." I say. People start screaming and running away from me. I tried to raise my hands in the air, but i accidentally ended up activating my repulsor rays. The repulsor rays hit a building. I got scared and I started to run away. Unfortunately, somebody already called the cops on me. I heard sirens. I stopped running. A police car showed up in front of me. A wolf stepped out of the police car. "FREEZE!" The wolf yelled at me. I've seen way too many cop shows to know what freeze means. "Ok. I'm still." I said. "Take off your helmet." the wolf said to me. Until now, I didn't know animals could talk. I thought only animals talked in cartoons and Disney movies. Apparently not. I met Tony Stark 5 years ago. I had no idea how the Iron Man suit was supposed to work. I eventually figured out that the face plate of the Iron Man suit is removable. I removed my face plate from my suit. The wolf was surprised when he saw my face. "What are you?" the wolf asked me. "I'm a human. Humans are highly evolved life forms." I said. "What's your name?" the wolf asked me. "Harley." I said. "I'm going to take you in for questioning." the wolf said to me. "Why?" I asked. "Because you're scaring people." The wolf said. "What's your name?" I asked the wolf. "My name's James Howler." the wolf said. "As long as you don't make me take a lie detector test, I'm fine with you questioning me." I said. The wolf led me to the back of the police car. Oh boy. I thought.
Next chapter: The Avengers discover that Harley Keener was a friend of Tony Stark.