The Crabs are unnamed crustaceans that work at different jobs throughout the series. Their jobs include driving clambulances, building houses, and making food.
Each crab is a scarlet red color. They both have two large claws and six small legs. The crabs usually wear a hat of some kind. One of the crabs who works at a hospital has a hair style and color which are the same as Deema's.
The crabs have appeared as background characters in many episodes of Bubble Guppies.