Though not necessary published exactly on this in 1939, the 27th issue of Detective Comics did hit newsstands around this time. Considered by
some to be the most valuable comic book in print (one sold for $1,075,000 in
2010), this issue introduced America to Batman. Originally referred to as “the
Bat-Man,” the legend was created by artist Bob Kane and writer Bill Finger.
Unlike most superheroes, Batman does not possess any superpowers, however, he
is crazy smart and being a billionaire allows him to create or purchase whatever
he wants to fight crime. In early comics and during the 1960’s TV show, Batman
was seen as quite jovial, but over the years the Dark Knight has returned to
his dark and self-torturing roots.