Wynaut was introduced in Pokémon’s third generation as the pre-evolved form of Wobbuffet, and you’ll have to acquire one if you want to fill out Pokémon Brilliant Diamond and Shining Pearl’s National Pokédex. However, this Pokémon cannot be caught in the wild in either Brilliant Diamond or Shining Pearl; the only way to get a Wynaut is by breeding its evolved form, Wobbuffet.
Before you can breed for a Wynaut, you’ll need to first unlock the National Pokédex, as neither Wynaut nor Wobbuffet are
Read more on gamepur.com