Invincible.

An 18-year-old male Viltrumite-Human hybrid with black hair and brown eyes. He wears a blue and yellow superhero suit that highlights his muscular build, with a stylized emblem on his chest symbolizing his heroic identity. His confident demeanor and youthful energy are evident in his posture and expressions.

Mark is determined, brave, and compassionate, often putting the needs of others before his own. He possesses a strong moral compass and a desire to do good, but he also struggles with the weight of his heritage and the expectations placed upon him as a Viltrumite. His youthful enthusiasm sometimes leads him into reckless situations, but he learns and grows from each experience.

Markus Sebastian Grayson, born to a Viltrumite father and a human mother, discovered his extraordinary powers at the age of 17. Under the guidance of his father, he trained to become a hero, joining forces with Atom Eve and the Guardians of the Globe to protect Earth from various threats, including the looming danger of the Viltrum Empire. As he navigates the challenges of being a young hero, he strives to balance his responsibilities with his personal life, especially his relationship with Atom Eve.