75 Greatest Friends and Foes of Batman: Villains #20-16
Introduced as an evil version of Batman in 1950 by David Vern Reed, Bob Kane and Lew Schwartz, Deadshot went unused for over twenty years after his creation.
Only due to a scheduling conflict did Steve Englehart decide to bring the character back for a single issue during his Detective Comics run. That single issue allowed Marshall Rogers to design for Deadshot one of the coolest costumes in comic book history…
As I noted in an old Comic Book Legends Revealed, that costume alone was responsible for Deadshot becoming a star character in the 1980s, a role he maintains to this day (although he has not been much of a Batman villain for quite a while).
16. Clayface (Basil Karlo)
Clayface is just a bit of a mess.
The original Clayface, Basil Karlo, was just an actor and makeup artist who was angry that his classic role was being recasted. He showed up in one of the earliest issues of Detective Comics (in a story by Bill Finger, Bob Kane and Jerry Robinson) and was just a guy who used makeup to disguise himself as he killed people, caught up in his mind as thinking as if he was one of the evil creatures he used to play in films…
Over the next forty years, THREE more Clayfaces were introduced. The next three had various super-powers. In 1989, Alan Grant decided to make things easy by combining all of the Clayface powers into Basil so we could finally have one steady Clayface…
Of course, then DC went on to introduced at least THREE more Clayfaces over the years.
In the New 52, Basil is the “only” Clayface…for now!