The graboid is a fictional species of sandworm that acts as the primary antagonist of the Tremors series of films. As Suzanne Ferriss and Mallory Young explain, the "destruction of 'graboids', as they are quickly dubbed, becomes the central tension of the film". The creature made its debut in the 1990 film Tremors (although the name "graboid" was only mentioned briefly), and reappeared in its three sequels and the Tremors: The Series television series. The graboid is based on the Mongolian death worm, a worm-like cryptid that purportedly attacks animals, and possibly humans. Within the film world, it is store owner Walter Chang (Victor Wong) who names them. The only other person in the first film to use the term "graboid" is Val McKee (Kevin Bacon). In the second movie Earl Bassett (Fred Ward) recalls the name "graboid". Graboids are depicted as subterranean animals, superficially resembling gigantic worms or grubs, with long, serpentine bodies. When fully grown, a graboid will measure...