It is outstandingly armored. As a result, it has no particular need to battle with others and can spend its time feeding on grass and berries.
This Pokémon lived in primeval jungles. It's thought that Shieldon had few enemies thanks to its sturdy face.
Much remains unknown about this Pokémon, as few have ever seen it. However, we know that it is calm and dislikes conflict, and it enjoys polishing its face against trees and rocks.