Mister

Mister is [Harry Dresden]'s 30+ lb. grey cat. Mister was found by Harry, and subsequently adopted, although jokes are made within the book that Mister has taken authority within Dresden's household. Aside from bulldozing the knees of Harry and his visitors, Mister is often used as a vessel for [Bob] to inhabit on intelligence missions, and is also used to garble a Summer Sidhe tracking spell in [Small Favor].