Terefunken is a genome, who appears in Ciel nosurge: Ushinawareta Hoshi e Sasagu Uta. His appearance is like that of some sort of dragon. Terefunken makes 'Kyuuu' noises. He is rescued by Ion and made her Genom through Genometrics. Through Genometrics they continue to make Song Magic, however Terefunken is a weak Geonom which makes it harder to make Song Magic, and also harder to make it successful such as in the case of Ahih rei-yah.