If you’re not familiar with the arc reactor that Tony Stark (Iron Man) has in his chest, it’s basically there to keep shrapnel from entering his heart and killing him after being attacked by Ezekiel “Zeke” Stane in Afghanistan.
It’s a long story and it changes drastically throughout the comics, but you can read more into that if you like.
Since Iron Man is pretty popular (okay extremely popular) it’s no surprise you can find a lot of DIY projects on how to create your own replica arc reactor…. some are okay, while others are actually really well done.
Bradley Lewis, a video game developer, falls into the second category. When one of his buddies asked him to build an arc reactor for his Halloween costume he couldn’t pass it up.