Batman's first comic appearance in "Detective ... number of differences between the Batman of the modern DC Universe and the "Bat-Man" who debuted in 1939 on display in Detective Comics #27.

Harley Quinn out-fought the Dark Knight in her very first appearance. Harley Quinn first appears in DC's canon in Batman: Harley Quinn #1 by Paul Dini, Yvel Guichet, Aaron Sowd, Richard Horie ...