User blog comment:Soniczero000/My thoughts on Archies comics/@comment-6710243-20130412095945/@comment-6576725-20130412141537

Wait some of Knuckles ancestors are in the Twilight Cage so wait if one of them find love and gave birth to Shade then Shade got token into the Nocturnus Clan  because the mother was part of the Nocturnus Clan.So that way Juli-Su could be still Knuckles girl and Shade can still tag along since she is related to Knuckles.