First appearance

Columns: Character ( s ) | First Appearance | Cover Date | Publisher | Estimated Value
Superman | Action Comics # 1 | June 1938 | DC Comics | $ 2,100,000 | Batman | Detective Comics # 27 | May 1939 | DC Comics | $ 475,000 | Sandman ( Wesley Dodds ) | Adventure Comics # 40 | July 1939 | DC Comics | $ 60,000 | Namor the Sub-Mariner | Marvel Comics # 1 | October 1939 | Timely Comics | $ 400,000 | Jay Garrick/Flash I ; Hawkman | Flash Comics # 1 | January 1940 | All-American Pubs | $ 95,000 | Captain Marvel | Whiz Comics # 2 | February 1940 | Fawcett Comics | $ 90,000 | Robin | Detective Comics # 38 | May 1940 | DC Comics | $ 75,000

Example questions:
Who created the company that published the first appearance of Fantastic Four ? | Who was the writer that helped create the first appearance of the earliest seen character ? | Who is the mother of the character that 's first appearance has appeared in the most recent date ? | When was the comic book publisher that was responsible for the first appearance of Dr. Doom started ? | Who started the company that published the first appearance of The Hulk ?

Answers:
Martin Goodman | Jerry Siegel | Mary Parker | 1939 | Martin Goodman