Pozzo appears on stage after the appearance of Lucky. They are tied together by a long rope; thus, their destinies are fixed together in the same way that Pozzo might be a mother figure, with the rope being the umbilical cord which ties the two together.
Everything about Pozzo resembles our image of the circus ringmaster. If the ringmaster is the chief person of the circus, then it is no wonder that Vladimir and Estragon first mistook him for Godot or God. Like a ringmaster, he arrives brandishing a whip, which is the trademark of the professional. In fact, we hear the cracking of Pozzo's whip before we actually see him. Also, a stool is often associated with an animal trainer, and Pozzo constantly calls Lucky by animal terms or names. Basically, Pozzo commands and Lucky obeys.
In the first act, Pozzo is immediately seen in terms of this authoritarian figure. He lords over the others, and he is decisive, powerful, and confident. He gives the illusion that he knows exactly where he is going and exactly how to get there. He seems "on top" of every situation.
When he arrives on the scene and sees Vladimir and Estragon, he recognizes them as human, but as inferior beings; then he condescendingly acknowledges that there is a human likeness, even though the "likeness is an imperfect one." This image reinforces his authoritarian god-like stance: we are made in God's image but imperfectly so. Pozzo's superiority is also seen in the manner in which he eats the chicken, then casts the bones to Lucky with an air of complete omnipotence.
In contrast to the towering presence exhibited by Pozzo in Act I, a significant change occurs between the two acts. The rope is shortened, drawing Pozzo much closer to his antithesis, Lucky. Pozzo is now blind; he cannot find his way alone. He stumbles and falls. He cannot get along without help; he is pathetic. He can no longer command. Rather than driving Lucky as he did earlier, he is now pathetically dragged along by Lucky. From a position of omnipotence and strength and confidence, he has fallen and has become the complete fallen man who maintains that time is irrelevant and that man's existence is meaningless. Unlike the great blind prophets of' yore who could see everything, for Pozzo "the things of time are hidden from the blind." Ultimately, for Pozzo, man's existence is discomforting and futile, depressing, and gloomy and, most of all, brief and to no purpose. The gravedigger is the midwife of mankind: "They give birth astride the grave, the light gleams an instant, then it's night once more."