The characters in Alice in Wonderland who are twins are called Tweedledee and Tweedledum, but they are not part of Carroll's first book. They were inserted into Disney's classic animation and Tim Burton's live-action version, but they are characters from the writer's second novel, called "Alice Through the Looking Glass". The two are identical twins who, apart from their looks, also resemble each other in the way they think, speak and act and are always completing each other's sentences.