Snowy (character) he is able to understand human language, and communicates with speech bubbles. His verbal responses to various situations include jokes, expressions of fright, and pleas to Tintin to exercise caution. In the early albums he takes an interest in mechanics and geography; in "Tintin in the Congo", he makes biblical references. As a dog, he also sniffs, tracks, chases, and bites. The character of Snowy evolved through the course of the Tintin series. In early works he exchanges dialog with other characters, including animals, and provides a running commentary on the situation. His character then became affected by the introduction
Tintin (character) athlete, in outstanding condition, able to walk, run, and swim long distances. Hergé summarized Tintin's abilities thusly: "a hero without fear or reproach." More than anything else, Tintin is a quick thinker and an effective diplomat. He is simply an all-rounder, good at almost everything, which is what Hergé himself would have liked to be. Tintin's personality evolved as Hergé wrote the series. Peeters related that in the early "Adventures", Tintin's personality was "incoherent", in that he was "[s]ometimes foolish and sometimes omniscient, pious to the point of mockery and then unacceptably aggressive", ultimately just serving as a "narrative vehicle"