The complete Pokemon Diamond and Pearl pokedex, part 1

Pokémon Name: Piplup
Type: Water
Classification: Penguin Pokémon
Pokédex Number: 007 Sinnoh / 393 National
Ability: Torrent – Increases strength of Water-type moves in a pinch
Dream World ability: Defiant – User's Attack stat raises two stages for every stat lowered by an opponent (including Attack)
Useful Attacks: Bubble
Location Found:
D/P/P: Starter Pokémon
HG/SS: Trade from D/P/P
B/W: Poke Transfer

...And the winner of Cutest New Pokémon goes to...Piplup! Piplup’s evolutions won’t be winning any beauty contests, though, folks, so enjoy it while it lasts.

While Piplup’s adorable roundness make it a fan favorite, its attacks are the weakest of the three starters. Its only Water-type attack before it evolves is the miserable Bubble, and, as usual, Water Pokémon aren’t in particularly short supply. Even only armed with Bubbles, though, its high Special Attack stats allow it to make short work of the first gym’s Rock-type Pokémon.

Evolves to Prinplup at Level 16.