usually if you want piplup you pick that Pokemon in the beginning of the game when you go through the professors suitcase.
Piplup is obtained as a starter in Diamond and Pearl or through trades.
The starter pokemon for Diamond and Pearl are Turtwig, Piplup, and Chimchar.
If you are talking about the games, Piplup was introduced in Pokemon Diamond and Pearl... Piplup was introduced in the anime Pokemon Diamond and Pearl episode 1, titled "Following a Maiden's Voyage!"
You cant get a piplup mask on Pokemon Diamond or Pearl u can get it but i don't know how
The only way to obtain it is to trade it from Diamond, Pearl, or Platinum. Once you have it in you game, you can breed it.
you get piplup as a starter in Pokemon diamond/pearl/platinum
Transfer it from Pokemon Diamond and Pearl.
No, you have to trade with diamond, platinum or pearl.
Get it as a starter in diamond, pearl and platinum
According to the Diamond and Pearl Pokedex book, Piplup is number 393.
piplup, turtwig and chimchar, same as diamond and pearl
Usually at target you can find a piplup doll in the Pokemon section. If you are asking 'Where can you find a Piplup in the Pokemon game?' you need the ds games Pokemon Diamond, Pokemon Pearl, or Platinum.