Origin

Aaron Fischer was a young gay teen from an abusive household. His father beat him for his sexual identity prompting him to run away from home with his boyfriend. His boyfriend didn’t stick around, but Aaron continued to ride the rails, making friends with other unhoused individuals. Inspired by the multiple Captain Americas over his lifetime, Aaron looked into a streak of missing unhoused, when he ended up captured like the rest of them. Roxxon had thrown them all in a work camp. Aaron fashioned himself a makeshift shield and fought to free the whole camp. Once accomplished, he continued to ride the rails helping anyone he could.
Creation
Aaron debuted in The United States of Captain America #1 by writer Christopher Cantwell and artist Dale Eaglesmith. It also featured a back up story from Aaron’s point of view from writer Josh Trujillo and artist Jan Bazalda.
Notes from Captain America
Sam Wilson
This kid’s hard to track down – he stays on the movie, going wherever he’s needed most, and doesn’t leave much of a trail. Hopefully that’ll keep him safe from whoever’s looking for him.
Steve Rogers
He looks like he’d blow away in a strong breeze, but he’s a scrapper. Took that gunshot like a champ. Just hope he’s not in over his head
Major Story Arc
The United States of Captain America

After Captain America (Rogers) had his shield stolen by a stranger in a Captain America costume with super speed, Cap and Falcon tracked him to a train track bridge. The imposter Cap used Cap’s shield to derail the train. While Cap was helping people escape the wreck, he saw Aaron and mistook him for the stranger. Aaron was just trying to help and let Cap know about the Network of Captain Americas, do-gooders from across the country inspired by Cap.
A second female stranger tried to kill Aaron, but Cap was able to tackle him out of the way of her sniper rifle. He got hit in the arm, but after he was patched up, he disappeared before the authorities could ask him anything.
However, he would remain in contact with Cap and his friends through the network. When their investigation led them to NORAD facility where the Hate-Monger was kept, Aaron was more than willing to show up to help. In fact, he was one of the few network members to answer the first distress call. It was a trap, unfortunately, with the Commander Krieger attempting to mesmerize Cap and the others. Thankfully, the rest of the network showed up just in time to save them.
The Invader
When Captain America found himself lost in the middle of America with no memories of how he got there, he reached out to Aaron to help him and the friends he was working with reunite using the railways off the grid. Once together, Aaron watched as Cap called in a favor from Emma Frost, who revealed they were all kidnapped and had their minds wiped by MODOC, a person of interest related to Cap’s investigation into the Outer Circle.