First appearance First appearances of popular heroes, villains and teams First appearances of popular heroes, villains and teams

| Characters_ | First_Appearance | Cover_Date | Publisher | Estimated_Value |
|---|---|---|---|---|
| The Joker ; Catwoman | Batman #1 | Spring 1940 | DC Comics | $160,500 |
| Green Lantern | All-American Comics #16 | July 1940 | All-American Pubs. | $131,250 |
| Captain America | Captain America Comics #1 | March 1941 | Timely Comics | $125,250 |
| Aquaman ; Green Arrow | More Fun Comics #73 | November 1941 | DC Comics | $10,050 |
| Wonder Woman | All Star Comics #8 | December 1941 | All-American Pubs. | $60,000 |
| Barry Allen/Flash II | Showcase #4 | October 1956 | DC Comics | $48,000 |
| The Justice League of America | The Brave and the Bold #28 | May 1960 | DC Comics | $8,127 |
| The Fantastic Four | The Fantastic Four #1 | November 1961 | Marvel Comics | $28,896 |
| The Hulk | The Incredible Hulk #1 | May 1962 | Marvel Comics | $21,672 |