On the west side of route 212, in front of Mr Backlots mansion there is a couple who own one!
Although this is nothing to do with the question, notice that Backlots name can refer to two things:
His BACK garden has LOTS of Pokemon
He owns a gardening LOT outside the BACK of his house
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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.
Prinplup
a few do, but if you choose infernape as your first pokemon, your rival (wally) will have piplup, that will evolve into prinplup, hope that answers your question
The trainer on Route 209 has Cleffa in Pokemon Platinum. Cleffa is a fairy type Pokemon and can evolve into Clefairy.
the trainer by that place, you know ? :)