The official Crisis Core Website updated today with Bios on Sephiroth, Lazard, and Genesis. Here is the translation:
His name is known across the world, a hero who is called the strongest SOLDIER First Class. Possessing near super-human strength, he always manages his duties perfectly. He is closed-off to strangers, and does not show his true feelings, but it seems that Angeal, Genesis, and Zack are allowed a glimpse at his real intentions.
A SOLDIER: 1st Class of the Shinra Company. He devotes himself to literature and enjoys reading from the epic Loveless. He has a friendship with fellow SOLDIERs Sephiroth and Angeal, though he also views Sephiroth as a rival. He went missing during the Wutai campaign....