The Avengers, as a group of existing superhero characters, was created by Stan Lee of Marvel Comics to be pitted against the Justice League of rival company, DC Comics. The group was first introduced in September of 1963 in a comic book solely dedicated to the team. This debut was unlike the usual way most characters were introduced, appearing somewhat as a guest character in a particular comic book. The group started out with five members in the persona's of Thor, Iron Man, Wasp, Ant-Man and the Hulk. Captain America was only introduced and came part of the team in the sixth issue of the series.