The only ways to get piplup are by picking it as your starter, trading, or breeding
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.
Turtwig (grass) Chimchar (fire) Piplup (water)
You can't find it in the wild. You can only get it from Proffesser Rowan as your first pokemon.
You cant get a piplup mask on Pokemon Diamond or Pearl u can get it but i don't know how
well just trade from a diamond or pearl
Breed your piplup with a ditto. Or breed a femle piplup with another Pokemon from the same egg group as piplup.
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!"
Piplup is obtained as a starter in Diamond and Pearl or through trades.
Piplup is a starter Pokemon if you didn't choose it have a friend trade you it.
Piplup evolves at lv. 16
You will need to transfer Piplup from the older games (Diamond/Pearl/Platinum to Black/White, then to the Pokebank) or trade for it.
piplup