Bio: Mark Sebastian Grayson is the son of Nolan Grayson (Omni-Man) and Deborah Grayson. When Mark was seven years old, Nolan reveals that he is a Viltrumite, a race of peaceful explorers, and had come to Earth to help mankind and that one day Mark would develop super powers. Mark's powers eventually appear while he is working at his part time job.
Notes: Invincible first appeared on Tech Jacket #1 as a preview. This is the very first preview (October 2002) of the character.
#2 - 'Sins of the Father | Part Two of Five' #3 - 'Sins of the Father | Part Three of Five' #4 - 'Sins of the Father | Part Four of Five' #5 - 'Sins of the Father | Part Five of Five' #5 (1:10 Variant)