Fanon talk:Curious family/@comment-5949205-20130314180254/@comment-89.240.85.224-20130318213519

I'm not Tiezel, but. . . it's because the alien baby's father is Buzz Grunt jr, the son of Tank and Stella Grunt. Since Stella is an alien (otherwise, Stella Terrano), she passed her genes to Buzz jr, and he did Woohoo with Harper, so she gave birth to Riley, the alien baby. Your welcome!