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| PERFORMER | Bruce Lanoil puppeteer |
| Jack Harrell voice | |
| DEBUT | 1991 |
Mr. Harold Heffer appears in the second season Dinosaurs episode "What 'Sexual' Harris Meant." Mr. Heffer is one of the WESAYSO board members deciding the issue of Al "Sexual" Harris's behavior towards Monica DeVertebrae. He has a slow halting delivery and bores the other members before finishing a sentence.