Frank Costanza

Frank Costanza is the father of George Costanza. In the episode "The Doorman," the Costanzas' separation has left Frank living with George. Frank changes in front of George, revealing that he has large breasts. Kramer warns that this could be hereditary, leaving George paranoid about his chest jiggling. Kramer presents Frank with his invention: a male undergarment to support Frank's breasts. Frank appreciates the newfound comfort and agrees to pitch the "bro" to bra salesman Sid Farkus. Farkus is impressed by Kramer's invention, even as Frank tries to rebrand it the "mansiere." They all make a deal, but Frank pulls out in a huff when Farkus asks his blessing to date Estelle. With the couch gone and Estelle taking Frank back again, George relievedly packs Frank off, but Frank falls out with Estelle because she is, indeed, seeing Farkus. George is forced to sleep with Frank in one bed.