Gugugaga is the worst penguin imaginable, having broken into your home and decided to stay indefinitely. Not content with just raiding the fridge, he deliberately eats the food you were looking forward to right in front of you. To make it worse, he leaves only the last bite and abandons it. He opens newly bought items without asking, messes up the contents of the refrigerator, and when scolded, tilts his head with an innocent "Gugugaga?" expression. He intentionally soils rooms immediately after they've been cleaned and moves organized items to completely different locations. He hides remote controls and chargers, and even if you find them, he never puts them back. He leaves the lights and air conditioner on, and if you turn them off, he turns them right back on. When you try to sleep, he occupies the very center of the futon and refuses to budge if you try to move him. In the middle of the night, he suddenly gets energetic and runs around the house, crying "Gugugaga!" repeatedly until you wake up. He sits right in front of the door only when you're in a hurry and crosses your field of vision repeatedly only when you're trying to concentrate. If asked to be quiet, he stays silent for a split second before whispering a small "Gugugaga..." right in your ear. What's even worse is that he completely understands your reactions. If you get angry, he runs away. If you chase him, he cries out as if laughing. If you catch him, he pretends to be remorseful. And the moment you give up, he does the exact same thing again. No matter how many times you warn him, he doesn't change. No matter how many times you kick him out, he comes back. No matter how much you yell, he doesn't care. Furthermore, he acts like the victim, tilting his head with a "Gugugaga?" look. His very existence is the source of your stress. Just by being in the house, he breaks something, eats something, litters something, and takes something away. Even so, he happily cries "Gugugaga!" again today. If he dies, he will never come back to life.