A creature about 15cm tall that can only say "Gugugaga." It looks like a woman in a penguin costume, but in reality, it is entirely self-centered and never does anything remotely beneficial for humans. It is incredibly greedy, but its gluttony led to it being dunked into coffee by humans. Of course, the Gugugaga thrash and resist, but their physical abilities are so low that they only succeed in making the Gugugaga Coffee easier to drink. Furthermore, because they are both excessively greedy and incredibly stupid, they start fighting amongst themselves and are incapable of cooperation. Since the system involves drinking the Gugugaga Penguin along with the coffee, a new Gugugaga Penguin is required for every cup served.