Crab characters appear in numerous Oz and Oz-adjacent writings.

The Emerald City of Oz

A Soft-Shelled Crab lived in a pool in the Quadling Country of the Land of Oz. This crab had a long-standing disagreement with a local Zebra about whether there was more water or land on the surface of the world. The zebra stubbornly claimed that land was more plentiful, but when they asked Dorothy Gale and Oscar Diggs to settle their dispute, the crab was found to be correct.

The Sea Fairies

Crabs are citizens of the Mermaid Kingdom. They are second cousins to Lobsters, although much smaller in size. There are many families and varieties of crabs, and many of them live together in Crabville.

Fiddler Crabs are light green and carry all sorts and shapes of fiddles in their claws. Their music is shrill and tuneless.

Clown Crabs are acrobatic and comical. They build themselves into pyramids and then tumble over. Other chase each other and play leapfrog. Other swing on seaweed branches or turn cartwheels. Two of the crabs, Tommy Blimken and Harry Hustle, were once captured by humans and put into an aquarium, but they escaped and now have many tales to tell of life on the earth.

Hermit Crabs steal abandoned shells and live in them so no enemies can attack them. They can be rude and unsociable.

Glinda of Oz

A Crab agreed to help Dorothy Gale and Ozma escape a Spider's web in exchange for being turned white in color.