Gudetama Devil Sticker
We have two suggestions about this phenomenon in our fanart Gudetama Devil Sticker. One of them is that Gudetama became a devil such as Lucifer or Mefisto according to his horns and red fork. Another version supposes that our favorite lazy egg yolk wanted to eat so much that became a devil in a moment. Or maybe there is another version - he wanted to become the devil and wanted to eat.