In ancient times, people would dig up fossils of this Pokémon and use its skull, which is harder than steel, to make helmets.
Headbutt Fossil display
A display of ancient Pokémon fossils. This specimen's skull was harder than steel.
#001
Bulbasaur
#002
Ivysaur
#003
Venusaur
#004
Charmander
#005
Charmeleon