Superman is a superhero who was forced to work for the government after the Justice League of America disbanded.
All-Star Batman and Robin the Boy WonderEdit
Superman, irritated by Batman's kidnapping of Dick Grayson, sought to arrest him, but argued with Wonder Woman, who desired to kill him. The two argued heatedly over the issue, but their argument ended in a kiss, revealing a romantic relationship between the two. Wonder Woman then agreed to wait before acting on her own to put Batman down.
The Dark Knight SeriesEdit
Superman, many years after the events of All Star, had become a weapon of the U.S. government in the ongoing Cold War after the disbanding of the Justice League and the retirement of Batman. He detested being used as a government weapon, but saw that it was the only way he could do any sort of good.
After Superman hurled a Russian warhead into a desert, it suddenly detonated, causing a massive explosion which flung millions of dust and debris into the atmosphere, resulting in a darkness which spread throughout the globe and altered the weather conditions indefinitely.
Strangely enough, due to Batman and his new army (the Sons of the Batman) supplying Gotham with the equipment necessary for survival in the harsh weather conditions, Gotham had become relatively peaceful, while other countries in the world have fallen into mass chaos.
The government, seeing this as a humiliation, sent Superman to defeat Batman. The two battled in Crime Alley, the very place where Batman's parents were killed by an unnamed robber. Even with his strength-enforcing armor, Batman was cornered after Superman crushed three of his ribs and destroyed his wrist.
However, Green Arrow, who allied himself with Batman prior to the battle, fired a Kryptonite-tipped arrow which exploded in Superman's hands and rendered him powerless. Superman was then utterly crushed by Batman, who viciously attacked him with all his might.
Batman then grabbed Superman's throat and stated "I want you to remember the one man who beat you..." before seemingly dying as a result of a sudden heart attack.
Superman attended Batman's funeral, where, as he was just about to leave, heard Bruce's heart beat. Realizing that Bruce used chemicals to simulate death, Superman went towards a young girl, who he knew was the new Robin, and winked, silently approving of the events to come before leaving.