|Episode First Shown in||The Spell Of The Unown|
|First Known Owner||Dr. Yung|
|First Game Appeared in|
|National Dex Number||201|
Unown does not evolve.
Unown has 28 different shapes. 26 of them are letters, and there is ? (question mark) and ! (exclamation point). All of the forms however, are black, and they have a large white eye with a small black pupil.
- Several Unown from the Ruins of Alph appeared in Vs. Unown.
- A Question Mark Unown was part of Lawrence's Collection in The Collector. It was freed in the end.
- Will's Unown debuted in Fighting Some ZZZ's. It is "W" shaped.
- Several Unown from the Solaceon Ruins appeared in Vs. Spiritomb.
- Thousands of Unown appeared in Alien Journey into the Unown.
- Two in particular, an "I" Unown and "V" Unown were featured exclusively.
- A petrified Z form Unown designated for Lawrence's Collection appeared in Crowning the Savior.
- Mirage Master's Unown appeared in Skirmish of Rivals! Confrontation in the Dream World. It is "G" shaped.
- Several Unown appeared in Finding the Perfect Fit.
- The Unown returned under the command of Tabuu in Subspace. They used Hidden Power to create the Subspace around the battlefield.
- Hidden Power