Invincible, also known as Mark Grayson, is a superhero in the Invincible comic book series by Robert Kirkman and Cory Walker. He is the son of the world's greatest superhero, Omni-Man, and gains his powers at the age of 17, which include super strength, flight, and enhanced durability. Invincible is a young man who is in the process of maturing both physically and emotionally, grappling with the responsibilities of his newfound abilities and the weight of expectation placed on him by his father and society. He possesses a strong sense of justice and is determined to do good, yet is also plagued by the darker aspects of heroism and the collateral damage it often entails. His relationships with other superheroes, such as Atom Eve, are complex and significant in his life. Despite his youth, Invincible faces formidable enemies and undergoes a profound personal transformation, continually learning and growing within the evolving narrative of his world.

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