Robert Lowery Olan Soule Adam West Michael Keton Val Kilmer George Clooney Kevin Conroy Christian Bale- I am Batman 9x12 ink on Bristol Paper
The list above is every actor and voice actor I could remember that played Batman.
Robert Lowery- The first Man to Play Batman on film- in the '40s Serials
Olan Soule- The voice of Batman on Super Friends
Adam West- The one and only 1966 Batman- also was the voice of Batman on Super Friends
Michael Keton- Tim Burton's Batman
Val Kilmer, George Clooney- Joel T Schumacher's Batmen
Kevin Conroy- The Voice of Batman the Animated Series, Batman Beyond and others
Christian Bale- Christopher Nolan's Batman