The characters HATTER, DODO, Madhatter, and Marchhare are all from Lewis Carroll's classic novel Alice in Wonderland. The HATTER is a character who wears a large hat and is known for his nonsensical riddles. The DODO is a large, flightless bird who helps Alice navigate the strange world of Wonderland. The Madhatter is a character who wears a large hat and is known for his eccentric behavior. The Marchhare is a character who is always late and is known for his mischievous behavior.