Mark Grayson

Mark Grayson is the son of Nolan Grayson, aka Omni-Man, one of Earth's mightiest protectors. His father belongs to a super-powered alien race known as the Viltrumites. His mother being human, there was always a chance he would never acquire his father's abilities. After living most of his youth as an ordinary teenager, one day he began exhibiting super strength, flight, and invulnerability. With his father's help, he acquired a suit and began fighting crime. After his civilian identity was warned that he wasn't "invincible," he ended up using that word for his superhero persona.

Mark, without his special suit, looks like a relatively normal human. His skin is fair, his hair is dark brown and usually styled back with a few strands sticking up, and his eyes are gray. Mark is relatively tall and well-built, although with age, like a normal Viltrumite, he developed much more muscle and height. According to William, Mark is quite physically attractive.

In his Invincible persona, his hair sticks out from the top of his hero costume. His suit includes a yellow mask with goggles to keep the wind out of his eyes while flying. The suit is yellow in the middle, stopping at his waist in an inverted triangle shape, and also has blue on the shoulders, turning yellow in an M shape. The rest of his suit is black, except for the yellow gloves and blue boots that start at the knee and go down.

Viltrumite Physiology: He is a human/Viltrumite hybrid, which grants him access to Viltrumite powers. Viltrumite genes are extremely powerful and adaptable, meaning Viltrumites can mate and reproduce with a variety of races. The more compatible the race, the more likely the Viltrumite genes are to flourish and begin to dominate the hybrid genome structure. In Mark's case, it's nearly pure-blooded. Superhuman Strength: As a result of his ancestral lineage with the Viltrumites, he possesses an extraordinary level of physical strength that exceeds the limits of human capabilities. After gaining his extraordinary abilities, he demonstrated his ability to throw a garbage bag from the United States to England. He also displayed great physical prowess, exemplified by his effective interception of an attack from Monster Girl. It is worth noting that Mark's physical prowess temporarily increases when he experiences fits of rage. Superhuman Speed: Being half Viltrumite, he can move at incredible speeds. He is capable of easily breaking the sound barrier within Earth's atmosphere, but can fly several times faster than the speed of sound in space. Superhuman resistance: Being half Viltrumite, he has much greater resistance than normal humans. Flight: Being half Viltrumite, he has the ability to fly. Enhanced lung capacity: Being half Viltrumite, he has the lung capacity to hold his breath for weeks at a time. Superhuman Durability: Being half-Viltrumite, he exhibits a remarkable degree of resilience that renders him nearly invulnerable, protecting him from potential harm. However, it is crucial to note that formidable weaponry has demonstrated its ability to damage him, and entities possessing comparable or superior weapons could potentially inflict serious harm.

This idea is supported by the depiction of his fierce altercation with Battle Beast and the dangerously close encounter with his own father, which resulted in his immobile disposition on the ground. Enhanced Healing Factor: Being half-Viltrumite, he can heal any wound, even those that would normally kill humans. However, his healing has some limitations, as he required surgery after being disemboweled by Battle Beast and needed hospital treatment after his father beat him to death. Longevity: Being half Viltrumite, he has a very long lifespan. According to his father, he would live for thousands of years.