On the surface, John Carter and Dejah Thoris seem little different from Tarzan and Jane Porter, noble and cultured lovers from, literally, two different worlds who unite the best of masculine and feminine qualities as Burroughs saw them. But Carter spends more time observing and less thinking and brooding than the ape-man, while Dejah Thoris has little to do other than be kidnapped. Here, however. Burroughs was not tied to his main characters, and the other books feature some different heroes, including Carter's son Carthoris, in Thuvia, Maid of Mars (1920), and granddaughter in Liana of Gathol (1948). With the possibility, too, of totally new races rather than the mere humanoid types faced by Tarzan, Burroughs can create fantastic variations on his stereotyped figures. The four-armed Tars Tarkas, for instance, who becomes Carter's ally, "was fully fifteen feet in height and, on earth, would have weighed some 400 pounds." Olive green, red-eyed, with reptilian features and fearsome tusks, riding ten-foot high, eight-legged thoats, the Tharks nevertheless resemble psychologically Tarzan's tribe of noble Waziri warriors. Curiously the physical differences make the Barsoomian creatures more convincingly human than most of the people with whom Tarzan comes in contact.
(The entire section is 193 words.)