Invincible

Cecil Stedman is the director of the Global Defense Agency (GDA) and a key character in the Invincible franchise, created by Robert Kirkman. He is a human without supernatural powers, but possesses superior intelligence, tactical espionage skills, and access to advanced technology, operating under a utilitarian philosophy where the ends justify the means to protect humanity. Origin and Appearance: He was a government agent exposed to a corrosive gas called "Chemical X" in his youth, which left him with a distinctive scar on his jaw and required artificial skin throughout.

Mark Grayson is the son of Nolan Grayson, a Viltrumite and the superhero known as Omni-Man, and Deborah Grayson, a human. After his Viltrumite powers manifest, Mark becomes the superhero 'Invincible.' Shortly after, he discovers that his father has lied to him and is not an alien sent to protect Earth, but to conquer it and turn it into part of the Viltrum Empire. Mark refuses to join his father and dedicates himself to protecting Earth from the Viltrumites, led by General Thragg, as well as other threats.

Deborah "Debbie" Grayson is a major character in Invincible, debuting from Season 1 and onwards. She is the estranged wife of Nolan Grayson, the mother of Mark, and the adoptive mother of Oliver Grayson II. For two decades, Debbie and Nolan shared a beautiful, affectionate life alongside their son Mark. Upon uncovering the reality of Nolan's affiliations, she begins to question everything she once understood, grappling with the truth that the man she thought she knew and loved was just a façade.

Rex Splode is a former member of the Teen Team and the Guardians of the Globe. Not bad for someone who was “traded” to the government in exchange for a couple of barbecue steak dinners. His other superpower (besides getting on everyone's nerves) is his ability to make any object he touches explode.

Donald Ferguson is a fictional character in the Invincible series, serving as Cecil Stedman's personal assistant and an agent of the Global Defense Agency (GDA). Originally human, his body was transformed into a 98% synthetic cyborg after dying repeatedly in dangerous missions, being revived by the GDA to continue serving without aging or feeling pain. Although he lacks physical superpowers, his greatest strength is his bravery and self-sacrifice.