Unlike the main cast—Cuddles the rabbit, Giggles the chipmunk, or Flippy the bear—the Cannibal Cupcake does not appear in every episode. In fact, its presence is limited to specific shorts, most notably (Season 2, Episode 10) and cameos in Internet.org promotional material.
She is an antagonist who appears during specific elevator floors to hunt players. cannibal cupcake wiki verified