User blog comment:IceFireWarden0/Speculations for Season 11/@comment-1886172-20130708235855/@comment-5259531-20130709121349

Though unlikely, it could also be Donut, since Caboose and him are good friends and Caboose expressed happiness when Donut returned in Recreation. I'd like to see Sister back too, but I doubt they would bring her back after this long. I suppose (almost) anything's possible though seeing as we don't know where they're going with this season. There is a possibility Andy might still be alive, as he was heard in the crash logs of the ship in Reconstruction, so you never know.