Cartman is a pretty easy character to sketch, he is just a couple of circles with stub arms and feet. You can see every primary bone in his little round body. His humorous, his fibula and tibia, all his hand bones and his ribs and vertebrae. I had to morph his bone structure to his "thick boneness" so I decided to make his arms short and his legs shorter, his ribs an abnormal width but still connect to the collar bone and vertebrae. His Hip bone is enlarged to match his hip size but still show his short rib cage and legs. I thought it was a bit clever to make his fingers spaced a bit to match his glove and his jaw a bit bigger than his mouth.