Professor Quack is the quirky duck scientist of the Spy Corps. Moblie Command Center. He fills the spy gadget vending machine with a variety of tools SPY Fox will need for his mission. He creates blueprints to explain each gadget, and then eats the blueprints after. One must assume that he has a never ending supply of blueprints. Professor Quack is a parody of Q in the James Bond franchise.
Given his green colored body and the white ring around his neck, it's possible that Professor Quack is a Mallard.