Mr. Callihan was Chuck's boss in "Chuck the Nice Pencil-Selling Guy". He was held hostage because of his dislike of sandwiches (except for grilled cheese, which he didn't know was a sandwich). However, when Chuck misplaced a button that released a slime-like substance on the inside of the vat that held him, he was nice enough to goop himself while being held hostage. The late Peter Graves provided his voice.