The complete Pokemon Diamond and Pearl pokedex, part 8

Pokémon Name: Rhyperior
Type: Ground / Rock
Classification: Drill
Pokédex Number: 464 National
Ability: Lightning Rod – All electric attacks are drawn to this Pokémon; Solid Rock – Super-effective attacks have their damage lowered
Dream World ability: Reckless – increases power of moves with recoil damage
Useful Attacks: Rock Cannon
Location Found:
D/P/P/HG/SS: Evolve by trading a Rhydon holding a Protector
Black: Trade, Poke Transfer
White: Evolve Rhydon

Rhyhorn and Rhydon were introduced in the original Pokémon Red and Blue, and finally get a third stage three generations later. You'll have to defeat the Elite 4 and the Pokémon Champion to find the Protector, a defensive item that will evolve Rhydon into Rhyperior when traded to another Pokémon trainer. Rhyperior naturally has impressive stats, most notably its defense. In addition to these numerical upgrades, it learns a number of powerful moves, including the new Rock Wrecker move and Mega Horn, the most powerful Bug-type move, perfect for dispatching those annoying Psychics.