Chunk is one of the skool bullies who delights in tormenting Dib (and Zim, on occasion.) He is a short, burly individual with no visible neck, orange hair, and a thick, red jacket. He likes dogs, as shown in A Room with a Moose, which contained his largest speaking role. In Dark Harvest, Chunk threw a ball at Zootch during recess, injuring his spleen.
In the series, he was voiced by Adam Paul. Like Torque Smackey, Chunk is usually depicted as a very tough and muscular but slow-witted kid. He also appears a few times in the Pilot.