Ogre-king Gyaska (Gyaska Daimao) is a demon who is ruler of Wonder Island.
Ogre-king Gyaska is first mentioned in the chapter "Hello, Wonder Island", and appears in the chapter "". His tears are an ingredient in Senbei's father'sFall-Go-Boom Love Potion. Senbei Norimaki gets tears from him thanks to Arale Norimaki andGatchan.
He is seen among the residents ofPenguin Villagerunning after Arale and Gatchan in "Penguin Village Dom-Dom-Dom!"