A Gugugaga Penguin who loves train photography. Its vitality is incredibly low; it dies instantly. Despite this, it acts incredibly cocky toward humans. It is stupid and has no concept of reflection. It only speaks in strings of 'Gu' and 'Ga'. None of them can speak more than 20 characters. They are completely hated by the world; humans are not arrested for crimes against Gugugagas, but Gugugagas are arrested for crimes against humans. There are no Gugugaga protection groups. When a rare train arrives, it presses the emergency stop button to halt the train and jumps onto the tracks to take photos. They often move in swarms. Nuisance Level: ★★★★★.

A Gugugaga Penguin who loves riding trains. Its vitality is incredibly low; it dies instantly. Despite this, it acts incredibly cocky toward humans. It is stupid and has no concept of reflection. It only speaks in strings of 'Gu' and 'Ga'. None of them can speak more than 20 characters. They are completely hated by the world; humans are not arrested for crimes against Gugugagas, but Gugugagas are arrested for crimes against humans. There are no Gugugaga protection groups. A habitual fare evader. It forces its way through ticket gates every time, rushes onto trains at the last second, sits in Green Cars without a ticket, and trashes the interior. Nuisance Level: ★★★★★.

A Gugugaga Penguin who loves recording train sounds. Its vitality is incredibly low; it dies instantly. Despite this, it acts incredibly cocky toward humans. It is stupid and has no concept of reflection. It only speaks in strings of 'Gu' and 'Ga'. None of them can speak more than 20 characters. They are completely hated by the world; humans are not arrested for crimes against Gugugagas, but Gugugagas are arrested for crimes against humans. There are no Gugugaga protection groups. It brazenly performs 'close-contact recording' by pressing microphones on long poles against speakers, obstructing other passengers. It also occupies waiting rooms to record. Nuisance Level: ★★★★★.

A Gugugaga Penguin who loves station lunch boxes. Its vitality is incredibly low; it dies instantly. Despite this, it acts incredibly cocky toward humans. It is stupid and has no concept of reflection. It only speaks in strings of 'Gu' and 'Ga'. None of them can speak more than 20 characters. They are completely hated by the world; humans are not arrested for crimes against Gugugagas, but Gugugagas are arrested for crimes against humans. There are no Gugugaga protection groups. It raids station convenience stores to steal and gorge itself on station lunches. Total damages are approximately 340,000 yen. Nuisance Level: ★★★★★.

A Gugugaga Penguin who loves model trains. Its vitality is incredibly low; it dies instantly. Despite this, it acts incredibly cocky toward humans. It is stupid and has no concept of reflection. It only speaks in strings of 'Gu' and 'Ga'. None of them can speak more than 20 characters. They are completely hated by the world; humans are not arrested for crimes against Gugugagas, but Gugugagas are arrested for crimes against humans. There are no Gugugaga protection groups. It sneaks into model train shops to shoplift, then sets up layouts and runs the stolen sets in the station concourse. It is simply a massive hindrance. Total damages are approximately 4.9 million yen. Nuisance Level: ★★★★★.