The theme of "Brock" includes a wide range of depictions of a complex figure, spanning from historical heroism to mythological representation. Authors such as Walter R. Nursey portray Isaac Brock as a determined military leader in Upper Canada, underscoring his bravery and tactical determination. In contrast, Alfred Wellesley Rees and Emilie K.
Baker depict Brock as a domestic creature and a legendary figure, respectively, emphasizing themes of family strife and Norse mythology. These differing perspectives, ranging from historical accounts to symbolic storytelling, reveal Brock as an emblem of perseverance, responsibility, and the relationship between humanity and nature.