Jerry Seinfeld (Jerry Seinfeld)

Jerry is the most passive, grounded character in the show, a figure who is "able to observe the chaos around him but not always be a part of it." Plot lines involving Jerry often concern his various relationships — Jerry often finds "stupid reasons to break up" with women which, according to Elaine, occurs "every week."

Jerry is generally completely indifferent to what goes on in his friends' lives, seeing their misery as merely an entertaining distraction, as well as an opportunity for joke material. He often plays along with their hare-brained schemes, though this is often just so that he can see them fail. On one occasion when Jerry lets out his emotions and cries, he is perplexed by the experience, asking, "What is this salty discharge?" Elaine points out that he has "never felt remorse," to which Jerry replies, "Yeah, I feel kinda bad about that." He will often nonchalantly state, "That's a shame" when something sad happens (often due to his or his friends actions).

Despite his usual indifference to his friends and their actions, Jerry apparently is quite satisfied with his life, to the point that he actually feels worried about anything that may threaten the group lifestyle. In the episode, "The Invitations," for example, Jerry admits that he feels depressed about George getting married, seeing as George will eventually leave the group and Jerry will never see him again. Once Elaine told him that she was "Getting out" of the group, Jerry became so worried about a near future of just him and Kramer that he almost unknowingly walked into the street with a car approaching while thinking about a horrible future life with just Kramer. In the episode, "The Bizarro Jerry," Jerry also grows panicky about losing the group dynamic when Kramer becomes too busy with his fake job and Elaine temporarily leaves to join the bizarro group, claiming that "The whole system's breaking down!"

Jerry rarely runs into major personal problems, unlike George and Elaine. In "The Opposite," this tendency is explicitly pointed out, as Jerry goes through a number of experiences after which he constantly "breaks even", even as his friends are going through intense periods of success or failure. In "The Rye," during a particularly trying time for Elaine, she angrily tells Jerry, "You know, one of these days, something terrible is going to happen to you. It has to!" Jerry simply replies, "No, I'll be fine." Many of the problems he does run into are the result of the actions of his archnemesis Newman, a disgruntled postal worker.

As in real life, Jerry is an avid comic book fan; particularly of Superman, who is his hero. As far as sports, Jerry is a fan of the New York Mets, New York Knicks, New York Giants and New York Rangers. In early episodes, a Yankees hat sat on the counter near his computer. Later on, by the middle of season 3, it was replaced with a Mets cap, possibly to better reflect Jerry's real-life support of the Queens side. Jerry is also portrayed as a hygiene freak in numerous episodes.