Kl'rt Kl'rt the Super-Skrull is from the Skrull world of Tarnax IV, before it was destroyed by
Galactus. He was a decorated soldier in the army and married a Skrull countess from the planet Zaragz'na and had two children, his beloved son named Sarnogg and a daughter named
Jazinda whom he despised. Because of his duty, he was kept away from his family and after the defeats outnumbered his victories, he was banished from Zaragz'na and was not allowed to see his son due to his wife. Dorrek chooses Kl'rt to be given the combined abilities of the Fantastic Four, surpassing all four in terms of power. Super-Skrull retains his shapeshifting and hypnotic abilities, and is sent to Earth to defeat the Fantastic Four and pave the way for a new Skrull invasion. During their first encounter, the Super-Skrull keeps the Fantastic Four at bay and forces them to retreat.
Mister Fantastic senses that Kl'rt's powers are augmented by an energy beam from the Skrull homeworld. Blocking the beam with a device placed on him by the
Invisible Girl deprives Kl'rt of his new powers. Defeated, he is imprisoned in a crater by the
Human Torch when he pursues the Invisible Girl. The Super-Skrull returns as the Invincible Man after the Skrulls restored his powers to fight the Fantastic Four. He breaks out of his prison, travels to New York and kidnaps
Franklin Storm. The Fantastic Four recognize his deception and return him in exchange for Storm. Storm is killed by a bomb placed on him by the Skrull Warlord Morrat in a final attempt to kill the Fantastic Four. The Super-Skrull was among the villains summoned by
Doctor Doom to attack Reed Richards and Sue Storm at their wedding, but Reed used a machine to remove the villain's memories. Super-Skrull is the Empire's agent on Earth during the
Kree–Skrull War; he temporarily disbands the
Avengers and kidnaps Captain Marvel, the
Scarlet Witch and
Quicksilver. With the war ending in a truce, the disgraced Super-Skrull sides with
Thanos, aiding him in his quest to obtain the
Cosmic Cube. The Super-Skrull attempts to capture
Rick Jones for Thanos, but is thwarted by
Captain Marvel. After a skirmish with
Spider-Man, the Human Torch and
Ms. Marvel, Kl'rt is trapped in the
Van Allen radiation belt. A Canadian research team accidentally pulls Kl'rt back from deep space, after which he kills all of them except for
Sasquatch. Kl'rt discovers that the radiation belt has given him cancer. Sasquatch is initially defeated by the Super-Skrull but tricks him, converting him into a stream of dissociated particles and sending him back into deep space. The Super-Skrull, later freed by the
Silver Surfer, discovers that his cancer is in remission, apparently due to a temporal anomaly that reverted his cellular makeup to its precancerous state. Kl'rt is freed from the Van Allen belt and cured of cancer by the sorcerer
Master Khan, and used against
Iron Fist. Khan brainwashes the Super-Skrull into believing that he is Bobby Wright, a twelve-year-old boy who acquires superhuman powers and a terminal disease from exposure to an alien spore. "Bobby" uses his powers to assume the identity of adult superhuman Captain Hero and ingratiate himself with Iron Fist and
Power Man. Captain Hero's misuse of powers leaves Iron Fist apparently dead and triggers disintegration. The Super-Skrull's imprisonment shielded him from the effects of Zabyk's Disaster, when the Skrulls lost their shapeshifting abilities. When the Skrull empire falls into disarray, Kl'rt goes into hiding on Earth and later attacks the Fantastic Four. He escapes his imprisonment and resumes contact with the Skrull empire. Super-Skrull later captures
Teddy Altman, informing him that he is a Skrull-
Kree hybrid. Teddy chooses to remain on Earth, refusing to join either species in space. Super-Skrull poses as Teddy and returns to space to spy on the Skrulls and the Kree. During the
Annihilation War, Kl'rt tries to stop the destructive wave before it reaches the Skrull world, where his son is. After nearly being overwhelmed by the forces of
Annihilus, he sacrifices himself by destroying the warship
Harvester of Sorrow, however unable to save his son. Kl'rt meets Praxagora, a
Negative Zone android who becomes his lover. His body is later recovered and revived. Kl'rt joins
Ronan the Accuser and
Zak-Del to reclaim the Kree home world from a
Phalanx invasion, during which Praxagora is killed by
Ultron. During the "
Infinity" storyline, the Super-Skrull is a member of the Galactic Council. To repay the Avengers' efforts in the war and attain glory, Kl'rt accompanies Alliance forces to Earth to free it from occupation by Thanos and they liberate the Peak. After his victory in the war against the Builders, Kl'rt is crowned emperor of the reborn Skrull empire as the Skrulls settle on the planet Tarnax II. During the "Return to Planet Hulk" story arc, Super-Skrull arrives on the restored planet
Sakaar and unearths the
Time Gem, intending to use it to restore the Skrull empire to its former glory. In the "
Infinity Wars" storyline,
Doctor Strange takes the Time Gem and uses it to loop through time, creating multiple versions of himself to defeat Kl'rt. During the "
Empyre" storyline, Super-Skrull joins the Kree/Skrull Alliance and is recruited by Tanalth the Pursuer to become part of Hulkling's inner circle.
S'byll '''S'byll''' is a
Skrull who was raised on the planet Satriani. She was responsible for curing Kl'rt's disease. Some of the
Silver Surfer's
Power Cosmic helps S'Byll restore the Skrulls' shapeshifting abilities as she temporarily wielded a portion of the Power Cosmic. Because of this, she was later sworn in a Skrull Empress. ==Powers and abilities==