Crashing waves + bagpipes! XMTAS returns to the Muir Island Research Center, where Moira MacTaggert has been keeping a terrible secret! Plus: Rogue fights tiny versions of herself! Wolverine gets liquified! Xavier makes it about himself (again)! All this and who is the angsty, Scottish energy blob at the heart of the matter?!! It's Proteus, Part 1 with cohosts Natalie Lopez, Sarah Mucek, and Sonia Nam.