Wynaut is a small, bipedal Pokémon covered in blue fur. Its head is spherical with ear-like, fingerless arms on either side and a bulbous growth on its forehead. It has a wide mouth with a serrated upper jaw and a pink tongue. Its eyes appear closed, each curving upward to a point in the center. The fur on its body ends in a zigzag pattern, extending over its short legs. Wynaut's tail is long and completely black, ending in a round, flattened tip with a white, eye-like spot.
Wynaut tends to live in caves and travel in herds. It will test its endurance by squeezing up against other Wynaut at night. In doing so, it strengthens itself, toughens its spirit, and learns to launch powerful counterattacks. When angered, it will slap the ground with its tail. As it loves to eat sweet fruit, it is also drawn to fruit gardens.
In Camp Pikachu, a Wynaut helped Pikachu and his friends, including the Pichu Brothers, get to the Pichu Brothers' next train to Big Town. At the end of the episode, the same Wynaut called several other Wynaut, apparently its friends, to help the gang move a cart out of the way.
In Pikachu's Island Adventure, six Wynaut, two Pichu, and a Buizel were forced off their island by Meowth and his cronies, who claimed the island for themselves. As a result, Pikachu and his friends agreed to help them reclaim the island.
Pokémon Mystery Dungeon: Explorers of Sky: A different Wobbuffet and Wynaut duo appear in Explorers of Sky, first seen examining a rock outside of Treasure Town. Several days later, the two are seen standing outside an entrance where the rock once was, and usher the player and partner into what is revealed to be Spinda's Café, where the pair manage the Recycle Shop. Later in the game, Wynaut informs the player of any new areas discovered after the introduction of Spinda's Project P.
This Pokémon was unavailable prior to Generation III.
Like its evolved form, Wynaut is probably based on an Okiagari-koboshi doll, a Japanese traditional doll with squinted eyes that stands back upright when pushed over. It is a symbol of perseverance.
Wynaut may be a play on the phrase, "Why not?"
Sohnano is homophonous with the phrase そうなの？ Sō na no?, which means "Really?" or "Is that so?" It is played off by its evolution, Wobbuffet, whose Japanese name of Sonans is homophonous with the interjection そうなんす Sō na-n-su, which roughly means, "That's the way it is." Together, they make for a potential perpetual conversation of, "Really?" followed by, "That's the way it is," and so on, as seen in Camp Pikachu.
Other languages' names for the Pokémon in this family, due to the fact that they were introduced in different generations, do not feature this pun.