Kathyrian alphabet
The Kathyrian alphabet (natively alpabetosen Käþirjaĸ [ˌɑlpəbɛˈtosɛŋ kəˈθɪjjək̚]) is the alphabet used to write Kathyrian. It has also been used to write many other languages, all of which have since died out or are restricted to government use. It seems to be related to the Greek alphabet, perhaps with a bit of influence from Cyrillic and Latin.
The alphabet
The alphabet is depicted below. Names are written in the Anglicized romanization.