73oss with Jackie!
There's a space between Here and There is a place in permanent flux. Some people are born with the ability to reach into this Negative Space and harness the unstable powers within. Jackson Meyer was one of these people, and spent the first half of his life dedicated to mastering this ability. It wasn't long until word got out and Jackie found himself picked up by the local crimelord; A fanatic of Negative Space. He was infamous for experimentation on Negative-Mediums, and never ceased to push the limits of Jackie's abilities.
The peak of which was the eventual sacrifice of his arms, trapping them in the Negative Space so that he could utilize the empty space they left behind to bring chunks of Negative matter into the physical plane. Over the years, the extended exposure to the strange laws of the Negative Space slowly altered his physical appearance into what it is now.
Currently, Jackie holds the proud title of being the only Medium that can actually fully enter into Negative Space and return; albeit only for short bursts. It is not a place for mankind to linger, nor is it a pleasant experience.
Naturally a bit of a jackass, Jackie currently acts as a go-to "kneecapper" for various, widespread gangs around the world.
He likes his job.
Here's his old ref!