Previously, in Invincible (2005) #22, Mark attempts to reveal his Invincible identity to Amber. After the Reanimen attacked, Mark left the scene to deal with them. Before Mark can come out, Cecil warns him of trouble. Then, he takes off.

In Invincible (2005) #0, Invincible reveals his secret identity to his girlfriend Amber Bennett. Surprisingly, Amber asks to tell her about his origins. After Mark has told her his origins, the two teenagers share a kiss in bed.

In reality, Mark Grayson is the hybrid son of Nolan Grayson. Indeed, he was born from his Viltrumite father and his Earth mother. Before, Mark thought his father was a writer who traveled frequently.

At age seven, Nolan Grayson reveals he is Omni-Man. As matter of fact, he comes from the planet Viltrum and is originally on a mission to advance Earth. But, the World Betterment Committee loses interest in Earth for being too underdeveloped, and Nolan finally lives on Earth.

Around age seventeen, Mark develops super powers as a late bloomer. Soon, he goes on superhero missions with his father. After Mark finds a girlfriend, an unknown superhuman kills the Guardians of the Globe. A month later, Invincible discovers Omni-Man ripping a hole through The Immortal.

Immediately, the blow kills The Immortal who was the leader of the Guardians. That day, Invincible finds out about his father’s lies and the actual World Conquering Committee. In reality, Omni-Man is on a mission to conquer Earth. When Invincible refuses to join his cause, Omni-Man beats him to near death then escapes.