The Flash, whose non-superhero persona is Barry Allen, was introduced to comic book fans in 1956. He’s the fastest man alive and has been one of the most popular comic book characters for six decades. …
Harley Quinn's First Appearance is a bit unique in the fact that she first appeared on TV's Batman: The Animated Series episode number 8 "Joker's Favor" which aired on September 11th, 1992. Later, Harley Quinn …
Azrael (Jean-Paul Valley) Created by Dennis O'Neil and Joe Quesada, Azrael first appeared in Batman: Sword of Azrael #1 (October 1992).
Mister Mxyzptlk Created by Jerry Siegel and Joe Shuster, and first appeared in Superman (Vol. 1) #30 (September 1944).
General Zod Created by Robert Bernstein and George Papp, General Zod first appeared in Adventure Comics #283 (April 1961).
Doomsday Created by writer-artist Dan Jurgens, Doomsday first appeared in Superman: The Man of Steel #17 (Nov 1992).
Bizarro (Bizarro Superman) Created by writer Otto Binder and artist George Papp, Bizarro first appeared in Superboy #68 (October 1958).
The Scarecrow (Dr. Jonathan Crane) Created by Bill Finger and Bob Kane, The Scarecrow first appeared in World's Finest Comics #3 (Fall 1941).
The Penguin (Oswald Chesterfield Cobblepot) Created by artist Bob Kane and writer Bill Finger, The Penguin first appeared in Detective Comics #58 (December 1941).
Mr. Freeze (Dr. Victor Fries) Created by Bob Kane, Mr. Freeze first appeared in Batman #121 (February 1959).