Nesk

The Nesk are a race of aliens in the fictional Animorphs books by K.A. Applegate. They are actually made up of thousands of intelligent ants that join together to form into the shape of a body capable of using the technology they have stolen from other species. They lived on Earth 65 million years ago, and constantly waged war against the peaceful Mercora. The Nesk appear in Megamorphs #2: In the Time of Dinosaurs.