A Hyehehe cub uses its adorably large eyes to charm the unsuspecting victims of its pranks. While you gaze into its precious peepers, it might just be reaching behind you to tape a sign to your back, or signalling to Hoola, who reveres this Mythical as its 'mischief mentor.' The floppy ears, neck frill and tippy toes of this scamp sport deceptively soundless cells, which only further disorient the targets of its jests. Curiously, the Hyehehe only has a small amount of plush fabric to contain itself, which quickly becomes a problem as the Monsterling starts to grow out of it. With each passing growth spurt, Hyehehe starts to snatch strips of fabric away from other young Monsters' blankets, baskets and blouses to stitch together...