Mappy (マッピー?) is a fictional character and the eponymous protagonist of the Mappy series. He is an anthropomorphic white mice who's a police that goes after the criminal cats Meowkies and their boss Nyamco.
Mappy heard the whereabouts of Goro stealing valuable items keeping them in his warehouse. Luckily, Mappy was able to go though the warehouse and obtain the stolen goodies from Goro and his Meowkies.