His real name is Madara, but when he's in maneki neko form, he insists others to call him Nyanko-sensei or simply sensei (teacher). So far, only Takashi calls him this in the anime. He takes the form of a maneki neko, round and cute (at least, according to him, however this also confirmed by Taki Tooru, Takashi's schoolmate). His maneki neko form is white, with an orange and grey marking on the top of his head and back, black eyes, wearing a red cat collar with a gold bell on his neck and has small red markings on his face.