The complete Pokemon Diamond and Pearl pokedex, part 5

Pokémon Name: Bronzong
Type: Steel / Psychic
Classification: Bronze Bell
Pokédex Number: 089 Sinnoh / 437 National
Ability: Levitate – Can't be hit by Ground-type attacks; Heatproof – Fire-type attacks inflict less damage
Dream World ability: Heavy Metal – Doubles user's weight
Useful Attacks: Gyro Ball
Location Found:
D/P/P: Turnback Cave, Mt Coronet
HG/SS: Trade from D/P/P
D/P/P/HG/SS: Evolve from Bronzor
B/W: Abundant Shrine

The mirror Pokémon Bronzor evolves into another sacred object, a massive living bell. Bronzong retains the powerful Steel and Psychic combination of its younger sibling, but builds on its attack power considerably, and naturally learning some useful new moves. If you expect to run into any Bronzongs, be sure to have some Fire- or Ground- type Pokémon handy if you want to dispatch of it quickly.