Turncoat (One-shot)
Turncoat follows the story of Duke¸ the world's worst superhero assassin¸ and his constant battle with his ex-wife-and-rival assassin¸ Sharon. Duke is always one step behind Sharon¸ constantly missing out on the "big hit" that will set him for life. (It certainly doesn't help matters that he only ever seems to go up against D-list superheroes like "Bug-Boy" and "Freedom Fighter".)
...so when Duke receives a contract for the most famous superhero team in the world¸ he realizes his time has come. Not just to finally make the big hit¸ but to finally move on from his ex-wife.
If only it were that simple.