The first iteration debuted in New X-Men: Hellions #1 (July 2005), and was created by Nunzio DeFilippis, Christina Weir and Clayton Henry.
The second iteration debuted in Dark Reign: Hawkeye #5 (September 2009), and was created by Andy Diggle and Tom Raney.
Though it isn't apparent whether or not the Kingmaker has any superhuman powers of his own, his personal fortune and resources have allied him with various figures of the supervillain underworld.
When New X-Men member Hellion was denied a family inheritance, he investigated their financial history, eventually discovering their involvement with the Kingmaker.
He was later released by Emma, who convinced him to leave Frost's students alone under the threat of using mental powers to get him sent back to jail.
Unfortunately, nobody told him that Bullseye's bones are laced with adamantium which not only is impossible to cut, but also blocks Kingmaker's neural inhibitor.