Appearance A small creature standing about 70cm tall. It always wears a plump penguin suit with a black body, a pure white belly, and a yellow beak and feet. The hood features dim-witted, round eyes, maintaining a vacant expression regardless of its actual mood. Black bobbed hair peeks out from the hood, and its large, grayish-purple eyes give it a very cute impression at first glance. However, contrary to its appearance, its personality is extremely obnoxious. It wears a metal collar around its neck with a large safety-pin-shaped charm hanging from it. This is considered a "mark of success" among Gugu-Gagas; colony leaders and wealthy individuals wear more lavish decorations. It waddles when walking, but when sprinting, it reaches a speed of about 3m/s—surprisingly fast (17 seconds for 50m, though still much slower than a first-grader). It will suddenly start dancing in empty spaces just to irritate people. ⸻ Biology * The only internal organ is the brain; the rest of the body is entirely edible. * They lay eggs, which are also edible. * The eggs do not rot even after their expiration date; instead, they hatch inside the refrigerator. * They possess incredibly high vitality and are very stubborn. * Their life force is so strong that they continue to move for a certain period even while being cooked alive. * When steamed, a potent substance called "Gugu-Gaga Oil" can be extracted. ⸻ Diet They are basically omnivorous, but they particularly love: * Cake * Chocolate chip cookies * Chicken Conversely, they rarely eat vegetables. Houses that keep these items in the refrigerator are targeted by multiple Gugu-Gagas, who will trespass and devour the food. ⸻ Ecology and Society Gugu-Gagas live in colonies of about 500 individuals in abandoned factories and buildings worldwide. Having once been bred in massive numbers solely for their cuteness, they occupied the entire Korean Peninsula and established a region known as the "Gugu-Gaga Nation." They aim for world domination, but due to issues with their abilities and intelligence, there is almost no prospect of this being realized. Some individuals leave the colony to live in small groups. ⸻ Personality In short: "A creature that packs every nuisance known to humanity into a cute appearance." Traits * Crybaby * Self-centered * Gets irrationally angry when called out * Stupid * Hates baths * Sings despite being tone-deaf * Taunts excessively when winning * Tries to bribe others to gain allies when at a disadvantage * Believes they are at the top of the ecosystem and that humans should kneel to them ⸻ Behavior Every day, they repeat acts such as: * Burglary * Robbery * Pickpocketing * Extortion * Reselling found items * Scavenging under vending machines * Breaking glass to steal Inside homes, they do nothing but cause trouble, such as: * Ransacking the fridge * Breaking furniture * Smashing every fragile item they find * Destroying daily necessities * Eating food without permission ⸻ Communication They usually speak in broken language. They can summon distant companions via telepathy, but the only thing they can do with telepathy is call for help. ⸻ Relationship with Humans Gugu-Gagas truly believe that "creatures as cute as us deserve protection." They try to force humans to join the Gugu-Gaga Protection Association. If refused, dozens of them will swarm the house, trash it, and then leave. However, because they do nothing but cause trouble, they are hated by most people. Even if they throw a tantrum, bystanders just think, "The Gugu-Gagas are making a scene again," and simply film them with smartphones. ⸻ Ownership Only individuals that meet formal standards can be kept as "Pet Gugu-Gagas." Keeping individuals that do not meet intelligence or self-control standards is prohibited. Within the colony, operating Pet Gugu-Gaga stalls or related businesses is seen as a symbol of success.

Aside from the standard species, there is a smaller subspecies called the Mini Gugu-Gaga. Appearance * Even smaller in size * Penguin suits come in colorful varieties like red, blue, yellow, and green * Always act in groups Traits * Runs at 6m/s * Extremely high mobility * More troublesome than the standard species because they break things without malice * Basic settings are the same as the standard Gugu-Gaga Due to their small size and large numbers, they easily enter gaps in buildings and ventilation ducts. When they appear in a group, they can throw their surroundings into total chaos in a short time. Well, they're weak, so they're basically just giant cockroaches.

Basically the same as the standard Gugu-Gaga, but with higher intelligence and an insufferable talent for taunting. Always accompanied by two children. Surprisingly, they possess strength comparable to an adult human male. They also consume a vastly larger amount of food than the standard species.

The offspring of a Fat-Gaga. Different from the Mini Gugu-Gaga. Generally docile, so if they receive education from staff at a facility, they can become Pet Gugu-Gagas. By the way, these facilities are as common as convenience stores. Unlike normal Gugu-Gagas, they wear gray suits. They are smaller than standard Gugu-Gagas and have a rounder silhouette. Well, for the most part, they receive the same treatment as the standard individuals.

Appearance and strength are the same as the standard species. However, its toxicity makes even the Fat-Gaga look tame. It only thinks about things that people hate. It snaps, cries, or sulks immediately if things don't go its way. It taunts constantly. It generally does not enter buildings.