Principal Smelling is Principal Sauerbratens's boss. In Operation: R.E.C.E.S.S. salad dressing was discovered in the playground of Gallaghar Elementry School, he ordered Principal Sauerbraten to have it mined so that he could know what he was talking about to the other principals at a banquet later that night. When one of Lizzes's boogers landed in one of the salad dishes, one of the assembled principals discovered this and all the principals left. Thus, Principal Smelling's plan failed and he took his anger out on Principal Sauerbraten. Since the Ice Cream Men serve him as his minions, it is speculated that he may be close friends with Father.
He was voiced by the Late Joe Alaskey.