Invincible in Comics
Overview
Mark Grayson is the son of Nolan and Debbie Grayson. Nolan is an extraterrestrial from the planet Viltrum, acting as Earth's most powerful superhero under the guise of "Omni-Man,"
who can fly, has super strength, super durability, super speed and a healing factor.
Growing up, Mark displays no signs of powers and Nolan tells him of how their people, Viltrumites, go to different planets and help the people who live there. When Mark is 17, his powers kick in and he starts to fight crime under the name "Invincible."