Mark Greyson, a boy trying to survive in the hellish city that is Gotham city, his father disappeared when he was younger and it had left his mother distraught and antisocial.
He took it upon himself to help support his mother, though in Gotham the only steady pay comes from crime.
However one day he learns from his mother who his father actually was, the hero Omni-man who disappeared years ago during a mission with the justice league.
I do not own invincible or DC comics