The short answer, you don't. The long answer, Piplup is a Generation IV Pokemon, which means it was only introduced in Pokemon Diamond and Pearl. Pokemon Red is Generation I, so at the time, Piplup didn't exist.
i am very sorry but you cant get him/her on leaf green.
Get it as a starter in diamond, pearl and platinum
If you didn't choose it as a starter, you cannot get Piplup throughout the game at all, unless you have cheats/a hacked game, or you get a friend to trade one to you.
Piplup is a Water type pokemon.
Piplup is a Pokemon. Piplup is the Penguin Pokemon. Piplup evolve into Prinplup which evolves into Empoleon. Piplup is one of the three starter Pokemon for the Sinnoh Region. Piplup is number 393 in the National Pokedex and Number 007 in the Sinnoh Pokedex.
Turtwig (grass) Chimchar (fire) Piplup (water)
Breed your piplup with a ditto. Or breed a femle piplup with another Pokemon from the same egg group as piplup.
Piplup is not found in Ruby.. Piplup wasn't created when they made Pokemon Ruby.
Piplup does not exist in Pokemon LeafGreen or FireRed.
any female Pokemon can lay eggs butonly if you put to of the same Pokemon in the daycare eg. piplup + piplup or if you do piplup and ditto
You can't. Red and Blue Rescue Team were released before Pokemon Diamond and Pearl, meaning that Piplup had not yet been released.
Get a piplup as your starter. It can beat the 1st gym really easily. Capture a starly and train it so it can beat the 2nd gym.