Topsy

Topsy is a grey kitten. He is Tom's son, although in one cartoon he befriends Jerry, he becomes Jerry's enemy later in other shorts. In Professor Tom, Topsy is explicitly a house cat, more often than not in other shorts such as in Saturday Evening Puss, he is depicted as an alley cat or a cat with unknown home. He was voiced by Harry E. Lang, Alan Oppenheimer, Michael Donovan, Harry Ratchford and E.G. Daily.