They are large bipedal, humanoid (though one ATAC is a quadruped) mechs powered by gemstones. It was an herbivore that walked both as a biped and as a quadruped. He is generally a quadruped but displays bipedal 'human' characteristics occasionally. The quadruped mammals are distinguished by their pale skin and long flexible snouts. All of these animals are tetrapods, but none is a quadruped. The party is attacked by a pack of quadruped alien beasts. Several genii are shown carrying a small quadruped. For instance, among the insects, the praying mantis is a quadruped. The withers is the ridge between the shoulder blades of an animal, typically a quadruped. A quadruped was also demonstrated which could trot, run, pace, and bound. Owen saw "Dimorphodon" as a quadruped. He still thought it was a quadruped, though. He considered "Megalosaurus" to be a quadruped. "Lotosaurus" was long and a heavily built quadruped. Yumoto insists this painting depicts a quadruped.