Mark Grayson: A 17-year-old high school student and a Viltrumite/human hybrid who becomes the superhero Invincible. Nolan Grayson: Mark's father, Debbie's husband, and formerly the greatest superhero of Earth known as Omni-Man. He was originally sent by the Viltrumites to prepare the Earth to be conquered by them, but has a change of heart and begins showing compassion for others after nearly killing Mark after his secret is revealed. He works together with Mark, Allen, and his second son Oliver to combat the upcoming threat of the Viltrumites before he is crowned their new emperor when it's revealed he was the son of Emperor Argall. Debbie Grayson: Mark's mother, Nolan's wife, and stepmother of Oliver Grayson. Lord Argall: The former emperor of the Viltrumites and the father of Omni-Man and grandfather of Invincible and Oliver Grayson. He was revealed to have been killed by Thaedus which plunged Viltrum into a civil war. Oliver Grayson: Mark's alien half-brother. The result of a relationship between Nolan and a member of the Thraxans named Andressa, who have short life spans, growing at a rapidly increased rate compared to humans, though his father's DNA is slowing his aging over time. Although his mother is an insectoid, he resembles a Viltrumite/human with purple skin (later fades to pink). Andressa tells Mark to take Oliver to Earth, so that he can have a life with the people there, because their lifespan is longer than her people's and he gets adopted by Debbie. He first takes the sobriquet of Kid Omni-Man and then Young Omni-Man as he attempts to rehabilitate the memory of Omni-Man in the general public. Kid Omni-Man was later killed by Thragg. Terra Grayson: The daughter of Atom Eve and Mark Grayson who would go on to become the third Invincible. Markus Murphy: Also known as Marky, he is the son of Mark and Anissa after the latter raped the former. He would go on to become Kid Invincible. Superheroes edit Atom Eve: Samantha Eve Wilkins is a former classmate of Mark's and member of the Teen Team. Eve was created as a result of a government experiment to create a human super-weapon for the military. She was born with an extensive knowledge of biological and chemical sciences and can manipulate all matter on a molecular level, although a neural mental block was implanted while she was a fetus that stops her from manipulating living animals and other beings. In the event of a severe enough or near-fatal trauma she is able to break her mental block and her powers are bolstered to nigh-omnipotent levels for a few seconds. Eventually, she and Mark realize their true feelings for each other and the pair start dating, fall in love, and get married after Eve gives birth to their daughter Terra. Allen the Alien: Previously a Champion Evaluation Officer who worked for the Coalition of Planets, he tested the skills of various powered heroes on each planet in order to determine if there was a suitable "champion" who could defeat a Viltrumite. He was born in a breeding program after his race was almost eradicated by the Viltrumites. He was bred to hopefully be able to defeat a Viltrumite and was the only successful child born of the program. He was later promoted to leader of the Coalition of Planets after the death of Thaedus by Thragg during their failed sneak attack on Viltrum and led the Coalition of Planets in the war against Thragg and his Thraxan/Vilturm hybrid army. The Guardians of the Globe: A superhero team. The original incarnation was brutally murdered by Omni-Man. A second incarnation was formed led by Robot until he went off to fight the Flaxans and then a third incarnation was formed that lasted until Robot's coup. The Immortal: Unkillable leader of the Guardians of the Globe and currently married to Dupli-Kate. He can resurrect himself as long as most of his body parts are near each other. He was a Celtic warrior who got exposed to a meteor radiation that gave him his powers. It is suggested in flashbacks that one of his past identities was in fact Abraham Lincoln. In the present storyline, he is alive and was briefly beheaded by Omni-Man during his massacre on the Guardians of the Globe. The Mauler Twins dug up his body and reattached his head causing Immortal to live again. Revealed to rule the world as a mad tyrant in the far alternate future, he is killed by a time-travelling Invincible at Immortal's behest, and his body parts are separated and buried far away from each other blocking his ability to resurrect. Invincible prevents the future Immortal from going mad in his own timeline by giving Immortal the assistance of Robot's brain to rule with suggestive guidance after Invincible leaves him in charge of Earth following Robot's downfall. Darkwing: A powerless member of the original Guardians of the Globe who was an homage to Batman. Killed by Omni-Man. War Woman: A member of the original Guardians of the Globe with superhuman strength who was an homage to Wonder Woman. Killed by Omni-Man. Aquarus: A fish-like member of the original Guardians of the Globe from Atlantis with aquakinesis who was an homage to Aquaman. Killed by Omni-Man. Red Rush: Josef is a member of the original Guardians of the Globe with superhuman speed who was an homage to Flash. Killed by Omni-Man. Green Ghost: A ghost-themed member of the original Guardians of the Globe who was a parody of Green Lantern. Killed by Omni-Man. Martian Man: A shapeshifting member of the original Guardians of the Globe from Mars who was an homage to Martian Manhunter. Killed by Omni-Man. Black Samson: Markus Grimshaw is an original member of the Guardians of the Globe with super-strength. Lost his powers (and with them, his Guardian status) for a while and wore a high-tech armor made by Art Rosenbaum before recovering them very abruptly. When Robot goes rogue and starts conquering the world, Black Samson is among the superheroes killed. Rex Splode: Rex Sloan is a former member of the Teen Team and the Guardians of the Globe who can make objects explode by charging them with kinetic energy, an ability he received as a child from black-ops government experiments. Initially used as an assassin, he ran away after meeting Atom Eve. He became Atom Eve's first boyfriend until cheating on her with multiple versions of Dupli-Kate, whom he then dated until she cheated on him with The Immortal and multiple duplicates of herself. He lost his hand and was shot in the head while fighting the Lizard League. After recovering, he matures emotionally and later sacrifices himself to kill a hostile alternate-dimension Invincible by charging his own skeleton to explode. Dupli-Kate: Kate Cha is a former member of the Teen Team and the Guardians of the Globe who can create an army of duplicates of herself. She eventually marries The Immortal and has children with him. Bulletproof: Zandale Randolph is a superhero with abilities similar to Invincible, but nowhere near as powerful. Bulletproof gains membership to both the second and third iterations of the Guardians of the Globe, where he remains until the team was dissolved following Robot's coup. On a related note, Bulletproof was one of the proposed names for the title character before the series saw print. Bulletproof later becomes the second Invincible to fill in for Mark when the latter temporarily loses his powers, but continues to use Invincible's costume design even after Mark recovers. He eventually betrays the Guardians to side with Robot when the latter takes over the world, and suffers facial scarring when Immortal activates a bomb hidden inside himself to stage a prison break. Shrinking Ray: Former member of the Guardians of the Globe who had the ability to shrink his body. He was consumed by Komodo Dragon of the Lizard League. Monster Girl: Amanda is a girl who was cursed by a gypsy, able to shapeshift into a large ogre-like creature with superhuman strength and invulnerability. Each change into monster form causes her normal self to become physically younger, until her boyfriend, Robot, figures out a solution that halts those side-effects of the curse and allows her to develop normally. She follows Robot through a portal to fight the Flaxans, where they both become trapped for nearly a millennium of subjective time in the Flaxan dimension before returning to their home dimension only a year after departure (Amanda with a body that has aged by 12 years). She rebels against Robot when she finds out he tried to have her son, whom she had not previously been aware of, executed. Shapesmith: A Martian disguised as human astronaut Rus Livingston who uses his metamorphic powers to change his shape. Believing himself to be a freedom fighter on Mars, he inadvertently causes the takeover of Mars by the Sequids. He is later killed by Robot, whom he'd always considered a friend. Darkwing II: Formerly Night Boy, the original Darkwing's sidekick, Benjamin Taylor continued Darkwing's legacy in Midnight City where he snapped and started killing criminals until Invincible apprehended him. A reformed Darkwing joins the Guardians of the Globe. He can teleport himself and others via the Shadow-verse using any shadow large enough to envelop him. During the battle with extra-dimensional Invincibles, he drags one into the Shadow-verse and gets trapped there for decades. Fightmaster and Drop Kick: Two time-traveling martial arts masters who were dispatched to find items in the past that could be used to kill their mad tyrant king, The Immortal, who it turns out had been secretly trying to orchestrate his own assassination. Fightmaster and Drop Kick eventually take Invincible into the future to kill The Immortal. Allies edit Amber Justine Bennett: Mark's first girlfriend whom started dating in high school. The two break up after realizing how much Mark's superhero life is interfering with their relationship, but remain on good terms. Mark later finds out that her new boyfriend has been beating her and decides to teach him a lesson and make him promise to stop by dangling him from a rooftop. Amber is seen some years later in a happy relationship with a different man. William Francis Clockwell: Mark's roommate and best friend. He initially dates Eve, though Eve admitted she only did it to get close to Mark. He helps Mark in freeing their friend Rick Sheridan after the latter was turned into a Reanimen by D.A. Sinclair. He eventually realizes he is gay and ends up in a committed relationship with Rick. Global Defense Agency: A secret government organization run out of the Pentagon that tries to stop threats to the Earth and operates multiple superhero teams including the Guardians of the Globe. Cecil Stedman: Government liaison and head of the clandestine Global Defense Agency. Cecil has a mercurial relationship with Mark and Eve as he prioritizes Earth's safety over all else and will go to questionable or dubious ends in order to make sure that happens. Mark works for Cecil after Omni-Man abandons Earth, but quits after discovering Cecil has hired on some of the villains Mark had defeated and thought were being punished to work at the GDA to create new technology and means of protecting the Earth. Mark eventually comes under his employment again to atone for his working with Dinosaurus which led to disastrous results. Cecil is later killed by Robot after Mark warns him of Robot's true intentions about world domination. Donald Ferguson: Cecil's assistant, the Guardians of the Globe contact, and android. Damien Darkblood: A demon detective. Ms. Popper: A GDA agent with teleportation and dimensional travel abilities. Art Rosenbaum: A tailor of superhero costumes and family friend of the Graysons. Rick Sheridan: Mark and William's classmate at Upstate University who was turned into one of the Reanimen. After he recovers from the ordeal, he begins dating William. It is also revealed that he is the only one that had recovered from being turned into a Reanimen. B. N. Winslow: Mark and William's principal at Reginald Vel Johnson High School who later becomes the dean at Upstate College. Andressa: A member of the insectoid Thraxan who is the second wife of Omni-Man and the mother of Oliver, Mark's half-brother. Coalition of Planets: A group of alien civilizations who came together to prevent the Viltrumites from taking over the universe. Thaedus: A Viltrumite opposed to conquering, founder of the Coalition of Planets. His assassination of Emperor Argall plunged Viltrum into a civil war where none but the strongest Viltrumites survived. He is the creator of the scourge virus that killed 99.9% of the Viltrumite population. Afterwards, Thaedus went on to establish the Coalition of Planets. Thaedus is later killed by Thragg during the failed sneak attack on Viltrum. Allen the Alien: A one-eyed Unopan and member of the Coalition of Planets. Space Racer: A technopathic member of the Coalition of Planets whose gun has blasts that can harm Viltrumites and rides a hover-cycle. D.A. Sinclair: A young and reclusive scientist at Upstate University and creator of the "Reanimen" who is thwarted by Invincible and then secretly hired by Cecil to build cyborg-like "soldiers" out of corpses as a backup army for fighting threats to the planet. After some time working with Cecil, Sinclair reforms and eventually helps Invincible and the surviving Guardians of the Globe fight against Robot. Reanimen - A group of cyborg zombies intended to be "the soldiers of the future". Battle Beast: Thokk is a white lion-like alien. After liberating his home world from alien oppressors he became obsessed with fighting and felt an insatiable need to engage in combat. His only goal in life being to find a champion who could best him battle. First thought of as a villain in Invicible's initial encounter with him, Battle Beast turned out to be mostly neutral, not caring for good or bad, and lived only for combat and so would go wherever he could find it. He was imprisoned on the same Viltrumite Prison Warship where Allen the Alien and Nolan were held. Allen used Battle Beast's lust for battle to convince him into helping with their jailbreak and later joining up with the Coalition of Planets against Thragg by promising lots of combat and fighting against the Viltrumites, the strongest beings in the universe. Battle Beast and Thragg eventually met in hand-to-hand combat where they battled non-stop causing massive damage across the planet upon which they fought. After several days, Thragg was barely able to beat Battle Beast with Battle Beast's final words being "Thank you." Battle Beast had a daughter who ended up inheriting her father's unquenchable craving for combat. Battle Beast is also the protagonist of his own series detailing his appearances between 19 and 55 of the Invincible series.[9] Enemies edit David Hiles: A former weapons engineer for a military-sanctioned research firm who turned to teaching physics at "Reginald Vel Johnson High School" after his son's suicide and his own subsequent divorce and unemployment. He blamed his son's death on high school bullies and "popular" kids, and started kidnapping students and then turning them into human bombs that he'd set off at malls and other teenager hangouts. Mark and Eve figure out what Hiles is doing and as Invincible and Atom Eve try to stop him, only to find Hiles waiting with a bomb strapped to his own chest. Invincible uses superspeed-flight to fly Hiles to Antarctica where his suicide bomb goes off. Robot: Former leader of the Teen Team and leader of the Guardians of the Globe until replaced by The Immortal. Not an actual robot, but a drone body controlled by a malformed human named Rudolph Connors living in a life-support tank, he cloned a new human body for himself using Rex Splode's DNA with the help of the Mauler Twins. Afterward, Robot would become romantically involved with Monster Girl. In Issue #71, he and Monster Girl disappear into a Flaxan portal and return several issues later. Changed from the time he spent in the Flaxan dimension, he becomes an antagonist to Invincible and other heroes who oppose him. Mauler Twins: An evil super-strong blue-skinned genius scientist and his clone who perfected cloning technology. They continuously argue as to which is the original, their rivalry driving their passion to create more and more advanced technology. They aid Angstrom Levy in his attempt to collect the knowledge of every multi-universal Levy into the Levy of their universe, which leads to deaths of several alternate-universe Maulers. During a fight against the Guardians of the Globe, both Mauler Twins are killed by Kid Omni-Man, who alleges it was accidental. They come back later with one of them explaining that they have countermeasures in case both of them die. Sanford: The former butler of Black Samson who wanted revenge on the Guardians of the Globe for firing Black Samson after Samson lost his powers. He stole Black Samson's super suit, went on a rampage, and later ended up incarcerated. Angstrom Levy: A genius with the ability to create portals to other universes who becomes one of Invincible's archenemies. In an attempt to amass a huge amount of knowledge about the multi-verse that he believes he'll be able to use to better his world, he builds a machine with the aid of the Mauler Twins that connects him to the mind of every Angstrom Levy in every universe. The machine explodes mid-process, causing a chain reaction that disfigures him and wipes out every other Angstrom Levy. He goes mad from having so minds collected in his own, becoming obsessed with torturing and killing Invincible, whom he blames for the incident. Angstrom uses his ability to travel to other universes to heal and strengthen himself while also on multiple occasions using his portals to attack Invincible, Debbie, Oliver, and Eve, and in one attempt imports several evil Invincibles from alternate universes to cause destruction and havoc. Levy eventually regains his sanity thanks to Eve, but is then abducted by one of the surviving alternate-universe Invincibles and taken to that Invincible's universe where he is tortured. Angstrom Levy is eventually beheaded by Robot when Mark's corresponding obsession pushes him to follow Levy into that other universe with Robot's help. The Viltrumites: Invincible and Omni-Man's species who are known conquerors of different planets. Thragg: The Grand Regent of the Viltrum Empire. After being deposed by Omni-Man, he goes rogue and seeks vengeance on Omni-Man and his family. He later fathers an entire army of half-Viltrumite children in order to attack Earth. He is Invincible's archenemy and the main antagonist of the series. Thragg is ultimately killed by Invincible. Ursaal: A Viltrumite/Thraxan daughter of Thragg and one of his many children. After realizing her father doesn't care for any of his offspring and only sees them as cannon-fodder she starts to reform and convinces her Viltrumite/Thraxan siblings to surrender in the final battle to the Coalition of Planets and to join in the battle against Robot and his army of drones to retake Earth. Onnan: A Viltrumite/Thraxan who is one of Thragg's sons. He was a psychopath who loved to torture and keep trophies of his victims in his cave. He is killed by Invincible at Thragg's goading, much to Ursaal's dismay.