Thing 2 is a character from Dr. Seuss's book "The Cat in the Hat." It is a small, mischievous creature that accompanies The Cat in the Hat during his visit to two children, Sally and her brother. Thing 2 is known for its wild antics and playful nature, often causing chaos in the house. Thing 2 is easily recognizable by its bright red and white striped outfit and its energetic personality. Along with its counterpart, Thing 1, it adds to the fun and excitement of the story, showcasing themes of imagination and the consequences of mischief.