A. In S1E17 “The Fighting Irish”, when we meet Jack’s siblings and his presumed father, everyone called him Pop. Which is probably just a pet name, not his real name.
B. In S3E13 “Goodbye, My Friend”, when Jack describes his daddy issues to Frank while watching Harry and the Hendersons, he calls his father Billy.
C. Every other time his presumed father is mentioned by name, it is Jimmy now.
D. Of course, we eventually find out that his biological father is Milton Greene.
![A father by any other name would be as absent [meme]](https://feddit.org/pictrs/image/7a34c961-318b-4ffc-8277-c3d4c43632ec.jpeg){kind=link}
Arguments:
A. In S1E17 “The Fighting Irish”, when we meet Jack’s siblings and his presumed father, everyone called him Pop. Which is probably just a pet name, not his real name.
B. In S3E13 “Goodbye, My Friend”, when Jack describes his daddy issues to Frank while watching Harry and the Hendersons, he calls his father Billy.
C. Every other time his presumed father is mentioned by name, it is Jimmy now.
D. Of course, we eventually find out that his biological father is Milton Greene.