"Hold your fire, we're officers not maniacs"
Gyaosu first appears in second chapter of the one-shot Wonder Island, as the boss of Gala and Pagos, though the three are not given names in this appearance. He summons Harry Senbon, the "top shooter in the world", at the Los Anguiris police office for a vital mission. While waiting for his arrival, Gyaosu and his men play war between Ultraman and Godzilla. When Harry arrives, Gyaosu asks him to stop a dangerous criminal taking refuge on Wonder Island who said that Gyaosu was "an old bald cross between Astro Boy and King Kong".
Gyaosu, along with his subordinates, was later re-used in Toriyama's later manga, Dr. Slump.
Later, Gyaosu leads the Penguin Village Police Force when a Bank Robber holds hostages in the Soramame Barber Shop. Gyaosu keeps telling Polly Buckets to not shoot the building when Kurikinton shoots Gyaosu in the head. The Penguin Village Police Force arrest the bank robber thinking the shot was from him.
Gyaosu is seen again when Arale is being a good citizen and constantly gives the police everything in Penguin Village saying it is lost.
He is told by Taro Soramame that the someone from the Red Ribbon Army is in town. He and the rest of the police force get armed up to take him on. They begin to head out but then get distracted and waste their time taking out King Nikochan's spaceship instead.
Video game appearance
- Japanese Dub: Kouji Totani (1980's series), Bin Shimada (1997 series)
- Funimation dub: Mike McFarland
- Gyaosu's name is taken from the giant monster of the same name from the Gamera film franchise.