There are 28: one for every letter in the alphabet (which makes 26) plus one for ! and for ? .
You can find unown in solaceon ruins (cave in solaceon town ). There are many different unown forms in there, but i guess you will find what ur looking for ! : - ))
a-z in alphabet
If you are talking about Unknown, the Pokemon, then no, it does not evolve. But there are many different types of Unknown
the "?" unown is in the same chamber as the "A" unown. the "!" unown is in the same chamber as the "Z" unown. it just takes time. be patient
That is an unanswerable questions since the unown are all the same. There are no best unown
There are in all 28 unown. There are only 26 in usual circumstances. Apparently there are 2 more, available by glitch only.
Unown was created in 1999.
Unown
11
24
you can find unown I in Weepth chamber, unown ! in Viapois chamber, and unown ? in Monean chamber.
Sorry, But Unown doesn't evolve