I...am...BATMAN~!

Arguably the number one Superhero ever conceived, Batman made his debut in the world of comics in 1939, obtaining his own series in 1940. Him and his young side kick, Robin. The story of Batman, (If you didn't already know) was of the heir of a wealthy family, Bruce Wayne witness the murder of his family at a young age. Swearing to bring justice to his city and avenging his parents, he grew up training both his mind and body to become Batman.

In earlier renditions of batman, he was far more of a vengeful vigilante, one who would and did kill. Later incarnations altered this, but the general concept of the character as a bringer of justice remained the same. The series of comics that began in 1940 continue to be made and printed today in a bi monthly basis, currently on hiatus due to a major change in events. Originally written by Bill Finger and illustrated by Bob Kane, the series of comics went through several different writers and artists in it's 60 year+ span, including artists/writers like Frank Miller.

The character of batman has had several films, TV shows, animations (Batman, The Animated Series, also considered the best cartoon ever made), and video games; is still viewed upon as one of the greatest superheros ever made. This is especially significant as he is also entirely human, while Superman is down right invincible.

EAK

Sources:

http://en.wikipedia.org/wiki/Batman_(comic_book)