Tweedledum and Tweedledee

Origin
Tweedledum and Tweedledee were characters from an English nursery rhyme and also in Lewis Carroll's Through the Looking-Glass, and What Alice Found There. Their names have also became synonymous in western popular culture as derogatory slang for any two people who look and act in identical ways.

In the original nursery rhyme, Tweedledum and Tweedledee agreed to have a battle because Tweedledum accused Tweedledee of spoiling his nice new rattle. However after a monstrous crow, frightened them both they forgot their quarrel.

In Lewis Carroll's Through the Looking-Glass and what Alice Found There (1871), the two fat little men are portrayed as twins who enact and quote their nursery rhyme for Alice. They also tell her the story of the Walrus and the Carpenter.

Public Domain Literary Appearances

 * Original Ditties for the Nursery (1805)
 * Through the Looking-Glass (1871)

Public Domain Comic Appearances

 * Alice #2