For true fans of the original MacGyver series, it was made clear and reiterated in several episodes that Mac was an only child. If I remember clearly, his mother was an only child also. At best he could have a distant cousin or great nephew on his dad's side as this side of his family was never introduced. His maternal grandfather is in several episodes. Mac believes that Harry was his last living relative until he finds out that he has a son just as the series ended.
I think a good follow up at this date is to see Mac back as possibly Pete's replacement with his son & grandson working together at Phoenix. I think this could be made into a workable series if they can get Richard Dean Anderson back, the actor that played his son, Sean "Sam" Malloy, Dalton James, a and a good writer.
I think a good follow up at this date is to see Mac back as possibly Pete's replacement with his son & grandson working together at Phoenix. I think this could be made into a workable series if they can get Richard Dean Anderson back, the actor that played his son, Sean "Sam" Malloy, Dalton James, a and a good writer.