Topo is an Italian mouse who befriends Tom and Jerry and saves Jerry from Tom and Tom from a dog (the dog comes back later on with two other dogs and the three of them try to catch Topo, but Tom and Jerry return the favors and save him) in the short Neapolitan Mouse.
In the ending of the episode, Topo, Jerry and Tom are chased by the three dogs. They find some big cheese wheels and throw them down a hill. The dogs trip on them, fell into the sea, and he then farewells Tom and Jerry when they're going back with the boat cruise.
Topo has grey fur, pink eyes and lips, a green shirt and a red bandana stripe.
Number of times he appears in episodes: 1
Language speaking: Italian, English.
Likes: Jerry, Tom, Traveling
Dislikes: Noises, Hurting, Picking on someone