Unown

Unown is a -type Pokémon introduced in Generation II.

Physiology
Unown is a flat, thin Pokémon shaped like an eye with appendages that make it resemble a letter or a punctuation mark. It is entirely black, except for its white sclera. All 26 alphabetic forms of Unown have fully open eyes while the two punctuation Unown have half-closed eyes. Though each of its forms has a counterpart in the Latin alphabet, Unown is said to resemble ancient writing and hieroglyphs. It is a mystery whether Unown predates or postdates written language, and therefore which one is based on the other.

Behavior
Unown rarely leave their home dimension. Together, a large amount of them can produce enough psychic power to reshape reality based on the dreams of whoever summoned them.

Evolution
Unown does not evolve.

Trivia

 * The name, "Unown", is based on the word "Unknown".
 * It is widely known as one of the most "non-evolving" Pokémon ever made.
 * The punctuation marks have droopy eyes, while the letters have normal eyes.
 * Altogether, there are 28 known Unown.
 * The "F" Unown is the main letter to appear in the websites.
 * Their home dimension was the battle ground for Palkia and Dialga's fight; many of them can be seen fleeing from their fight in the beginning of the movie.
 * The only move Unown can learn is Hidden Power, and nothing else.
 * If you watch closely, Unown never blinks.
 * Each Unown has a different meaning.