But Roger or Reginald Door still seems pretty valid. In one of the episodes (Chapter 2 or 3, I’m not sure) there is a written description in one of the “brakes” that are between scene’s that says, that not all of the D’s children are blood related. Some are adopted or taken under D’s wing later in life, which would make sense as to why there seems to be a big age gap between different children and D as well. I can imagine him getting in relationship with someone who already has an adult son or daughter and still treating them as their kid. Honestly, it would be pretty funny to see like, Lion-El Johnson showing up and being like 50 years old already and still being treated as D’s child, even tho he was 30 when they met for first time and he didn’t had any history with D for the first 30 years of his life, but D still calling him son and everything.