Gatchan Norimaki, formally named Gadzilla Norimaki, began as an egg found by Senbei Norimaki during a prehistoric time-travel expedition. This egg, secretly placed on Earth by the God of the Galaxy, hatched into a cherub-like being adopted into the Norimaki family. Initially one entity, Gatchan later spun a cocoon and emerged as two identical beings, thereafter known collectively as the Gatchans or Gatchan Brothers. This replication continued, resulting in at least eight Gatchans observed in a future timeline. Physically, Gatchan possesses green hair, small functional wings enabling flight, and two antennae. The character lacks defined genitalia and exhibits no clear biological gender, though various media employ both male and female pronouns. Communication primarily occurs through unique gibberish sounds termed "Gatchanism," understood only by Arale Norimaki, though the manga occasionally includes recognizable Japanese or English words. Gatchan displays an innocent, playful personality with a strong attachment to Arale, often joining her adventures. A defining trait is an immense appetite for nearly any material except rubber, with a particular fondness for consuming metal. This diet relates to a divine mission from the God of the Galaxy: to hinder human technological advancement by devouring metal resources, ensuring a primitive society. Senbei's removal of the egg from prehistory prevented this plan. Discovering Gatchan's integration into Penguin Village and happiness with the Norimakis, the God abandoned the mission to destroy humanity. Key abilities include flight via wings, energy projection called the "Antenna Beam" fired from the antennae, and metal consumption. The Antenna Beam serves defensively or for retaliation, notably used against antagonists like General Tao in films. Gatchan also exhibits resilience to physical harm, such as surviving high-altitude falls. The character sometimes utilizes equipment like ninja suits and small blades during activities like war games. Across media, Gatchan appears in the Dragon Ball manga's General Blue Saga, accompanying Arale when Goku arrives in Penguin Village; the Gatchans zap a tree and consume General Blue's car. In Dragon Ball Super's "Future" Trunks Saga, both Gatchans follow Arale to an invention conference in West City, devouring an entire building during a conflict involving Goku. Film appearances include Dragon Ball: Mystical Adventure, featuring an Antenna Beam attack on General Tao. Video game crossovers like Dragon Ball Heroes and Dragon Ball Z: Budokai Tenkaichi 3 feature Gatchan as a support character assisting Arale's attacks. Live-action commercials, such as one for G.U. clothing, depict Gatchan flying alongside other characters. The name "Gatchan" originates from Arale's combination of "Gamera" and "Gojira" (Godzilla), though anime adaptations altered this origin, deriving the name from onomatopoeic sounds. Conceptual development notes reveal Gatchan was inspired by a rejected lizard-like pet concept, later redesigned based on Toriyama's infant niece and incorporating elements from an angel character in the unused manga "Ageha Town Observation Diary."