Steamboat.

About Steamboat

Steamboat Bill, most commonly as Steamboat, was a fictional character appearing in American comic books published by Fawcett Comics, most commonly in association with the superhero Captain Marvel. The character played the role of valet to both Captain Marvel and his teenaged alter-ego, Billy Batson, and was intended by Captain Marvel co-creator C. C. Beck to appeal to African-American readers. However, protests from African-Americans and other readers concerning Steamboat's racial stereotyping led to the character's disuse after 1945.