Not a lot is known of Vincent. The big thing is he turned evil and was killed by Adam. After Adam killed him, Elalyth put a curse on Adam to fall whenever one of their children dies or is about to die. In the end of ClanDestine v.2. it is shown that when Adam came from Eden to destroy the monsters and left, there was residue energy that leaked away and went into Vincent's grave. Then his grave cracks. Nothing is made for sure but this might mean the awakening of Vincent.