"Their shapes look like hieroglyphs on ancient tablets. It is said that the two are somehow related."
The mysterious of certain Pokemon are numerous, but you could argue that none are more mysterious than the Unown. Shaped like the alphabet, there are 26 different forms of Unown, making it truly unique. What's more, both the games, the anime, and the movies have shown just how mysterious these Pokemon are.
Unown's Basic Attack is Hidden Power, while its Special Attack is Struggle.