Another theme in "The Heroic Slave" is revealed in its title: heroism. Douglass casts Madison Washington, a real-life historical figure who led a revolt on-board the Creole in November 1841, as a figure of insurmountable strength and great character. It is significant, too, that a white man, Mr. Listwell, informs the reader of Washington's strengths. For the reader of the time, the decision to use Listwell's voice to inform the reader about Washington validates him in a way in which even Douglass's voice cannot. Listwell reveals the following about his first encounter with Washington:
Madison was of manly form. . . . His whole appearance betokened Herculean strength; yet there was nothing savage or forbidding in his aspect. A child might play in his arms, or dance on his shoulders. A giant's strength, but...
not a giant's heart was in him. . . . He was just the man you would choose when hardships were to be endured, or danger to be encountered,—intelligent and brave. He had the head to conceive, and the hand to execute.
This description of Washington undermines prevailing notions of black men as beastly or savage—notice how Douglass constantly asserts Washington's manliness and says that "there was nothing savage" about him. It also undermines notions of black docility and feeble-mindedness, which were among the justifications for slavery.
Both Madison Washington's true history, and the one that Douglass creates for him, place him in the tradition of other great American heroes, particularly the Founding Fathers. He is named after both James Madison and George Washington. Douglass's affirmation of Washington's sharp wit places him alongside Madison in his understanding of the country's values, and his physical prowess and courage place him alongside George Washington.
For further discussion of the story's themes of heroism and parallelism with the Founding Fathers, consult Russ Castronovo's essay "Fathering the Nation: American Genealogies of Slavery and Freedom." You can find the essay for free online.