In his normal appearance, Naberius Kalego is one of the prestigious professors at Babyls Academy, a school in the demon world. He is the homeroom teacher of the Abnormal Class, one of Suzuki Iruma's teachers. When he got summoned by Iruma, Kalego appears as a small white creature resembling an owl chick as in our fanart Mairimashita Naberius Kalego Transformation Sticker. He is about the size of a grapefruit, with short black bat-like wings, black, horn-like tufts, and Kalego's distinctive front hair curl.