Board Thread:Episode Discussion/@comment-4141313-20181208003742/@comment-25396609-20181208182234

ACWeapons wrote: Did not expect to see another Arc. As for the son, Adrian I believe the credits named him, I believe he's Terra's son from a past marriage. Sweet family, but what looms ahead worries me for their safety.

Could also be adopted or conceived via in vitro fertilization with a sperm donor. If the kid is a girl, then an interesting third option opens up, but I don't believe that to be the case.