graphos

Action Comics 1938:

Detective Comics 1939:
http://chezlounge.typepad.com/.a/6a011279419f6128a401348047118f970c-pi

Spider-Man, 1962:

Thor, 1963:

Spiderman 1964:
https://fthmb.tqn.com/sOZRumFYTZwu_Il3iDrnCqwo3_c=/1207×1734/filters:no_upscale()/amazingfantasy15-58babcb93df78c353c433cd2.jpg

Dr. Strange, 1973:

 

Spider-Man, 1988:

Superman, 1994:

Spider-Man, 2000:
http://vignette2.wikia.nocookie.net/marveldatabase/images/8/83/Amazing_Spider-Man_Annual_Vol_1_2000.jpg/revision/latest?cb=20091003201459

Black Widow, 2002:

Spider-Man, 2016:

Civil War, 2016:

Batman (DKR), 1986:

Batman, 1988:
https://vignette2.wikia.nocookie.net/marvel_dc/images/1/17/Batman_The_Killing_Joke.jpg/revision/latest?cb=20160822131419

Batman, 2008:

Batman, 2012:

 

Spider-Man, 2017: