Deever and Dumfree Tweed (also known as Tweedledum and Tweedledee) are two villains from the Batman series. They are identical cousins, but they are often passed as identical twins. Much like the Mad Hatter, they are both overly obsessed with the book; Alice in Wonderland. They always work together, whatever they do. Although Tweedledum and Tweedledee are most often depicted as being the leaders of their own criminal organization, they sometimes are re-imagined as the henchmen of the Joker.