Milliasaur

Milliasaurs are creatures which appear in Games Workshop's Warhammer 40,000 universe. They were mostly seen in the skirmish-level wargame Necromunda.

Description
Infesting the most disused areas of Necromunda's Underhive, Milliasaurs appear as gigantic centipedes, some growing as large as seven feet in length, with an armoured, rocklike hide. They are ambush predators, preferring to lie in wait for their prey to come close. Once a potential target is within reach, the Milliasaur will then scuttle from its hiding place with remarkable speed, using its rows of razor-sharp teeth to bite the poor unfortunate and inject them with its potent venom. This toxin will incapacitate virtually any creature the Milliasaur attacks, allowing it to drag them off to its lair, where it may consume the victim at leisure.

Some Underhive psykers (mutant humans with psychic powers) have learned to utilise their abilities to control Milliasaurs and use them as both servants and living weapons; whilst these beasts are by no means domesticated, their mental bond with the psyker is strong, and they will do his or her bidding, even if this means the death of the Milliasaur.