Copper

Copper is a dog who works at the Police Station with Booker in Animal Crossing: Population Growing. In Animal Crossing: Wild World and Animal Crossing: City Folk, he and Booker work at the town gate. He always has an "always-wants-to-work" attitude. He even states that he wants to buy turnips from Joan, but he must work and will not leave at any costs.

Animal Crossing: Population Growing
In Population Growing, Copper has a police look. He wears a blue uniform with police-like details. He works at the Police Station with Booker and can inform the Player on upcoming events. He also leads the aerobics event.

Animal Crossing: Wild World and Animal Crossing: City Folk
In these games, Copper works at the town gate. He will open or close the gate's door when asked to. He now wears a classic soldier uniform, complete with a helmet and spear.