Tarrasque

The legendary tarrasque is possibly the most dreaded monster of the Material Plane. It is widely believed that only one of these creatures exists, though no one can predict where and when it will strike.

A scaly biped, the tarrasque is fifty feet tall and seventy feet long, weighing hundreds of tons. It carries itself like a bird of prey, leaning forward and using its powerful lashing tail for balance. Its cavernous maw yawns wide enough to swallow all but the largest creatures, and so great is its hunger that it can devour the populations of whole towns.