Question: In season 2 T-Bag says to Suzy, when he kidnaps her and the kids and takes them to his childhood home, that he cannot procreate and that he is the last in the line of Bagwells. How then does he have a son in season 5? Have I missed something?
Prison Break (2005)
1 question in season 5
Starring: Dominic Purcell, Robert Knepper, Wentworth Miller, Amaury Nolasco
Going Under - S4-E15
Continuity mistake: Michael is discussing a bargain with Sara but when he first draws it out it's in squares, then when the clipboard is lying flat on his stomach the letters are circled.
Michael Scofield: I thought your cousin was trying to move in on your girl.
Fernando Sucre: That's my other cousin but thanks for bringing that up, jackass.
More trivia for Prison Break
Answer: Giving an in-universe answer; T-Bag didn't know he had a son at the time he was speaking to Susan. It's unlikely he got a fertility test done and may just be assuming, however, if he got a fertility test done after 1991, it could come back that he's impotent. But as far as he knows, he's the last Bagwell of his family. Then in season 5 he finds out David is his son. It's not unheard of for women to not let the fathers know about their children (or that they're even pregnant) or not give their child the father's last name. Giving an out-of-universe answer; writers simply retconned his past to allow him to have a child, forgot what they had written, or just hoped no-one would notice.
Bishop73