I'm not sure if anyone else noted this, but the unused character
in the Chrono Cross portrait section looks to be a prototype (or a dummy) image. The character to the left is yan (2nd tone) in chinese and means "face", which I assume means the same as its Japanese kanji counterpart. The developers probably used this as a note to designate the images included as character portraits.
Strange though, that does look like an ouroboros off to the right.
