The only thing these monsters have in common with the creatures they originated from is the number of their legs. Over centuries of selection and genetic modification, the mollusks inhabiting the cold shores of planet Tarr turned into dreadful monsters. The Reapers bred them for one purpose - war, and so the only qualities they enhanced were size and ferocity. But the resulting monsters were uncontrollable. The stick approach favored by the Reapers did not work. Over time, they came up with a solution: they managed to establish a mental connection with the monsters. That is why the eyes of these creatures are sharp with intelligence and intense hatred. They are the eyes of the true monsters - their masters, the Reapers.
In a fight, the Devourers are extremely dangerous. They weigh several tons and can overturn a tank. The Devourers attack by standing on hind legs and falling flat on their belly, crushing anything that happens to be underneath.