Thuggo (voiced by Brad Garrett in most appearances, understudied by Kurtwood Smith in four episodes) is the diabolical leader of a group of black-hooded skeleton-like Thuggosaurs. He is a Megalosaurus. His vanity insists he always look good, so Thuggo often spends more time trying to improve his appearance than accomplishing his evil plans - plans that would mean the end of the Living Dinosaurs once carried out.
Thuggo, voiced by Brad Garrett in most appearances and understudied by Kurtwood Smith in four episodes, is the diabolical leader of a group of black-hooded skeleton-like Thuggosaurs. He is a Megalosaurus. His vanity causes him to invest more time improving his appearance than executing his evil plans - plans that would ultimately lead to the extinction of the Living Dinosaurs if carried out.