I just posted my original Onyx animatic from 2008, which you can view here. The original name of the island he lives on was tokidoki, but it has since changed. Actually, nearly everything has changed or evolved in some way. Onyx was originally blue! And his initial arm cannon design has always reminded me of a trash can.
Kira Buckland was Onyx's original voice actor. Tuck's design (and gender) has changed drastically since, and her original voice came from Alynne, my fiancée and co-conspirator. Magus's original voice actor was my good buddy Luke Martinez. Both Alynne and Luke were also involved in our Twilight spoofs, and the Army of Gamers short.