Count me in!
From the description provided, I got the feeling that he is a torn character, ripped by his concience, pierced by guilt. I'm trying to get that feeling into my concept.
The Oxygen King: Aaron King, CEO of Oxxen Oxygen Harvesting Corp.
As CEO of the multinational company Oxxen, Aaron King has become the most powerfull man on earth.
His career made a rather strange twist of fate. If we go down the records, we find out that Aaron King was an ecology specialist, very concerned with climate problems, global warming and other signs of disastrous problems regarding the state our planet was in. His point of view was, that the whole planet was controlled by a few big players and he hated this profoundly. By the time that mankind had nearly destroyed it's own habitat, King had built out a vast network of laboratories and research centers around the globe in search for oxygen filtering and production methods, as war had contaminated most of the world's air.
This is about the time he made friends with the wrong people. They forced him into becoming the man he now is. The only true ruler of the planet, attached to the strings of others. Blinded at first, he now sees what has become of him, the only thing he never wanted to be. The terror of the small man, proclaimed king by a vast amount of suckups, but chained in his palace, an empty shell... thus living his worst nightmare.