Italian cartoonist Donald Soffritti imagines the later years of superheroes, with hilarious results. His brilliant cartoons have been collected into a book, available here.

The Scarlet Pimpernel             1903
The Scarecrow                          1915
Zorro                                            1919
The Lone Ranger                      1933 (January 30)
Mandrake the Magician            1934 (June 11)
The Phantom                             1936 (February 17)
Sheena, Queen of the Jungle 1937
Superman                                  1938 (June)
Namor the Sub-Mariner           1939 (April)
Batman                                       1939 (May)
The Human Torch (original)   1939 (October)
Flash                                           1940 (January)
Electro (comics)                        1940 (February)
Green Lantern                           1940 (July)
Aquaman                                    1941 (November)
Captain America                       1941
Catwoman                                 1941
Wonder Woman                        1942
Wolverine                                   1974