Tarrasque

The most terrible creature known to inhabit the Prime Material Plane. The beast is a full 50 feet tall and 70 feet long quadruped with a long tail, reflective carapace, and two large horns on its head. There is only one tarrasque, who was slain many centuries ago, and now its egg is under the care of Hachoo in his complex on the Chibouholm Isles.