User blog comment:Thailog/Ep. 125 "Usual Suspects" discussion/@comment-4981324-20120415035333/@comment-4981324-20120415141431

Yeah, I remember it was in an Arsenal storyline (Roy's name before becoming Red Arrow). Roy needed help from Vandal, but then Savage found out that Roy and his daughter are in his bloodline. It's in the comics, so I do'nt know if its true for the show, but if it is it makes sense that Guardian would also be in the bloodline; being Roy's uncle and all.