6. In the 1997 DC/Marvel special Batman/Captain America, the Red Skull hires the Joker to steal an atomic bomb during World War II. Joker evades Batman, Cap, Bucky, and Robin and delivers it to the Skull, but is horrified when he learns that the Skull is a Nazi (saying “I may be a criminal lunatic but I’m an American criminal lunatic!”). When the Skull threatens to drop the bomb on Washington D.C., the Joker actually fights him in the plane’s cargo bay. When Captain America and Batman take over the plane and bring it over the ocean, the two villains are dropped out with the bomb just before it explodes. Both Captain America and Batman are convinced the two are still alive somehow.
7. In the debut of Hulk, Stan Lee chose gray for the Hulk because he wanted a color that did not suggest any particular ethnic group. Colorist Stan Goldberg, however, had problems with the gray coloring, resulting in different shades of grey, and even green, in the issue. After seeing the first published issue, Lee chose to change the skin color to green.
8. Iron Man was created by Stan Lee as a challenge to create a hero no one should like and force people to like him.
9. ForgetMeNot is a character in the X-men comics who has been on the team for years. However, due to the nature of his powers, he went unnoticed by his peers and remained absent from official rosters. Professor X placed a psychic reminder in his own mind to force him to remember ForgetMeNot’s existence once an hour.
10. The Teenage Mutant Ninja Turtles was originally a parody of Daredevil, and both Daredevil and the Turtles were created from the same accident.