The personality of the film's Hammond is a near opposite to the novel's version, sharing only his eccentricity. Hammond is depicted as a kind, jovial and charismatic Scottish capitalist who takes responsibility for his actions, a sympathetic and loving grandfather and leader who means well and tries to keep everyone safe. Despite valuing money, he appears less interested in profit than his novel counterpart and explicitly states that he does not want to create a park that caters to the extremely rich – he is instead concerned with sparking interest in others. The film's Donald Gennaro possesses the majority of the negative and greedy aspects of the novel's Hammond.