Who is Gramps Schwartz from Welcome to the Monkey House and what is their importance?

Gramps Schwartz, the patriarch of the Schwartz family and owner of the apartment, is one hundred and seventy-two years old. He was seventy when anti-gerasone was invented, so he looks older than everyone else. He dominates the apartment by adjusting his will to favor the people who are currently following his rules. Gramps gets real food, the only private bedroom and control of the television. He bosses the whole house around and indulges in his own speeches and emotion, especially when he changes his will to take Lou out of it.