|First Appearance||Double Trouble|
|Voiced By||ENG: Neil Crone
JP: Mitsuo Senda
Dr. Chu (ドクターチュー, dokuta chu) is a character from Pecola series.
A mouse who is Chewy's grandfather. He is Cube Town greatest inventor and he often invents gadgets that help others on the island. His inventions are often used by Pecola and Chewy in their adventures. He is also friends with Pecola's grandfather, Pecolias. He owns two vehicles one is a submarine and also an airplane called the Mad Mouse which sits on top his laboratory. Likes to collect comics.