Joker is one of DC's most iconic villains and is recognized throughout the comic universe for his shockingly psychopathic plans. It is hard to imagine the clown prince of Gotham as anything but an outright villain and Batman's arch nemesis. However, over several issues of comics, the Joker has done his share of good deeds. Here we see five most heroic acts of Joker. Although Batman and Joker have been at each other's throats from time immemorial, Batman: Europa saw the vigilante and the clown form an unlikely team. They were both infected with a deadly virus and were searching for a cure. The road trip across Europe shows Batman and Joker form a bond that gives readers a better understanding of the psyche of these iconic characters. Joker is the most unlikely person to save Gotham, the very city that he has terrorized for years. However, in Batman: White Knight by Sean Murphy, that is exactly what happened. A reformed Joker, now going by the name Jack Napier becomes a political figure of prominence and wages war against the corrupt 1% of Gotham, showing genuine care for the citizens. Joker and Batman's goals rarely align. However, in The Brave and the Bold #191, Joker is framed for the murder of Oswald Cobblepot or Penguin. Joker teams up with Batman to solve the murder and clear his own name in the process. It turns out Oswald faked his own death and as a result of the investigation, Joker is cleared of the charges. The War of Jokes and Riddles finds Batman caught in a war between two of his smartest foes, Riddler and Joker. Upon a final confrontation, it appears that Riddler orchestrated the entire thing to get Joker to laugh. Batman nearly snaps and almost plunges a knife into Riddler's face. Joker intercepts the blow with his hand, stopping Batman from breaking his no killing rule. Joker and Red Skull team up against Batman and Captain America in a Marvel-DC crossover comic. While Joker might be raving mad, he draws the line at working with Nazis, stating that he is an American criminal lunatic. Having turned on his partner, he thwarts Red Skull's plan of dropping a nuclear bomb on Washington and presumably ends up dead in the process.