You can't without some sort of cheat device
you have to have a ditto and prinplup or empoleon
Prinplup evolves into Empoleon at either level 36 or 40
Theres one on route 212.
same as in hearthome city.. only higher levels - staravia lvl 34 - grotle, monferno, or prinplup lvl 36 - buizel level 32 (absent if he has prinplup) - Roselia level 32 (absent if he has grotle) - ponyta level 32 (absent if he has monferno)
you have to choose piplup as your starter pokemon from prof.oak at the beginning and level it up to about level 14-18, then it will evolve into PRINPLUP either that or trade it from a friend in the union room hope this helps! :)
Level 36
unless you cheat you have to evolve piplup which is a starter Pokemon
If you chose Chimchar as your starter, your rival will eventually get a Prinplup. Also, at the Pokémon mansion, one trainer will have a Prinplup.
It evolves at level 16,To Prinplup (Evolve Prinplup to Empoleon at 36) :)
you must start with a piplup and lvl it up until it evolves into prinplup and then into empoolion
you have to have a ditto and prinplup or empoleon
Prinplup
U can't catch prinplup u only can evolve it from piplup and to get piplup is to cheat or at the start of the game u choose piplup as the starter hope this helped :)
level 32
Nowhere You Have 2 Evolve Piplup
your rival (if u started with chimchar)
With a Budew.