Who is Gluppity-Glupp in the lorax?

Gluppity-Glupp is a character in "The Lorax" by Dr. Seuss. He represents industry and pollution in the story, as he is part of the Once-ler's factory that produces thneeds. Gluppity-Glupp's actions contribute to the destruction of the environment and the depletion of the Truffula trees.