Registeel

Ruby: REGISTEEL has a body that is harder than any kind of metal. Its body is apparently hollow. No one has any idea what this POKéMON eats.

Sapphire: REGISTEEL was imprisoned by people in ancient times. The metal composing its body is thought to be a curious substance that is not of this earth.

Emerald: Its body is harder than any other kind of metal. The body metal is composed of a mysterious substance. Not only is it hard, it shrinks and stretches flexibly.

FireRed / LeafGreen: It is sturdier than any kind of metal. It hardened due to pressure underground over tens of thousands of years.

Diamond +7: Tempered by pressure underground over tens of thousands of years, its body cannot be scratched.

HeartGold +2: Its body is said to be harder than any kind of metal. A study has revealed that its body is hollow.

Omega Ruby: Registeel has a body that is harder than any kind of metal. Its body is apparently hollow. No one has any idea what this Pokémon eats.

Alpha Sapphire: Registeel was imprisoned by people in ancient times. The metal composing its body is thought to be a curious substance that is not of this earth.

Sword: Registeel’s body is made of a strange material that is flexible enough to stretch and shrink but also more durable than any metal.

Shield: It’s rumored that this Pokémon was born deep underground in the planet’s mantle and that it emerged onto the surface 10,000 years ago.