Originated in Necrovion, I Ark Mattorox is different from your average shade. It is sometimes seen outside of Necrovion, sometimes heard talking to itself and has an unusual interest in humans. It seems to like writing and reading, preferably starting midway in a book and working towards the beginning and the end simultaneously. Sometimes ruins a book in attempt to bend it backwards, however the books it returns to the library are always in a good state. The only problem is it tends to return books before it borrowed them and thus confuse the librarian.
As for the writings, it has a huge collection of papers containing the word "I" or "I Ark Mattarox"; A thesis on the concept of individuality and a transcript of 'The Book of Time", which he wrote while visiting the study room.