Mr. Mistoffelees is the Original Conjuring Cat with his own Conjuring Turn with magical powers.
" . . . He is quiet, he is small, he is black from the ear to the tip of his tail. He can creep through the tiniest crack. He can walk on the narrowest rail . . ."
He sings in many songs including The Invitation to the Jellicle Ball, Mungojerrie and Rumpleteazer, and of course, Mr. Mistoffelees.