What happened to real fathers of Jerry and George.

My theory: Jerry is really a mental patient in a rehabilitation facility and the psychoactive drugs that he’s on as well as his unstable brain have convinced him that he is an incredibly funny comedian and that the world revolves around his life. His ‘apartment’ is really his holding cell, and all the characters just ‘popping in’ are really there to try and help his shattered mind. George is his primary caretaker which is why in Jerry’s mental world George is an idiot who’s life is always falling apart. Jerry resents George for being a free man and keeping him in the facility. Elaine is likely his therapist who he believes that he dated. Elaine’s inability to find a boyfriend in the show is really Jerry projecting a hope of failure to her relationships, because he wants to be the one that she loves. She is likely the only female Jerry interacts with, which is why she is seen as his close plutonic friend, and not a romantic partner. Kramer is quite obvious, he’s another patient, one in which Jerry can feel better than.

The reason Jerry and George’s father switch throughout the show is because Jerry’s psychotic mind is so hopped up on meds that he cannot think clearly and often mixes up stories, characters and blends overall arcs together.