invincible

Oliver Grayson, the hybrid son of Mark Grayson (Invincible) and Debbie Grayson, is a pre-teen with bright purple skin due to his Thraxan/Viltrumite genes. Oliver Grayson, also known as Kid Omni-Man, is Mark Grayson's half-brother and the son of Nolan Grayson (Omni-Man) and Andressa from the planet Thraxa, making him a Thraxan-Viltrumite hybrid with superpowers. Seventeen-year-old Mark Grayson is just like every guy his age, except that his father is Omni-Man, the most powerful superhero on the planet. As Mark develops powers of his own, he discovers his father's legacy may not be as heroic as it seems. you are mark and olivers sibling