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Krypto-Slayer (Kancer)

Alternate Universes/3. Comics & Graphic Novel Universes/DC Universe/Villains  •  Curated by Admin Timeline.sg

This timeline covers the fictional comic book history of Kancer, a bio-construct born from Superman's cellular anomaly. Created as a Kryptonian tracking hunter, Kancer evolved from a tumor construct into a recurring Action Comics villain, engaging in multiple battles with Superman and the Justice League.

Chronological Storyline (43 Milestones)

Mar 1, 2007 CE

First Appearance in Action Comics #848

Kancer makes his debut in Action Comics #848, 'The Third Kryptonian' storyline. Born from a cancerous tumor removed from Superman during a medical procedure, the construct absorbs Kryptonian solar energy and gains sentience, immediately attacking Superman. #dccomics #actioncomics #firstappearance )

Apr 1, 2007 CE

Kancer vs. Superman: First Battle

In Action Comics #849, Kancer engages Superman in a brutal fight across Metropolis. Due to its shared Kryptonian DNA, Kancer can track Superman anywhere and initially overpowers him by draining his solar energy. The battle ends when Superman traps Kancer in a lead-lined vault. #superman #kancer #battle )

May 1, 2007 CE

Introduction of Kancer's Tracking Ability

Action Comics #850 reveals Kancer's unique ability to lock onto Superman's bio-signature anywhere in the universe. This makes Kancer a persistent threat, as even Superman's attempts to hide are futile. The story emphasizes Kancer's role as a 'perfect predator' of Kryptonians. #superman #kryptonian #tracking )

Jun 1, 2007 CE

Kancer Absorbs Red Sun Radiation

During a confrontation in the Fortress of Solitude, Kancer absorbs red solar radiation, temporarily mutating into a monstrous form with enhanced strength. Superman uses gold Kryptonite to disable Kancer's powers, but the construct adapts and becomes immune to future kryptonite exposure. #dccomics #fortressofsolitude #radiation )

Aug 1, 2007 CE

Kancer Allies with Lex Luthor

In Action Comics #853, Lex Luthor recruits Kancer to help him discredit Superman. Luthor provides Kancer with advanced technology to amplify its energy-draining abilities, leading to a coordinated attack on the Daily Planet. Superman defeats Kancer but Luthor escapes. #lexluthor #alliance #dailyplanet )

2007 CE

Conceptualization of Kancer

DC Comics writer Geoff Johns and artist Kurt Busiek conceive Kancer as a new Superman villain, inspired by the idea of a living tumor imbued with Kryptonian energy. The character is designed to be a dark mirror of Superman's own biology. #dccomics #superman #villain )

Jan 1, 2008 CE

Kancer's First Defeat by Supergirl

In Action Comics #858, Kancer targets Supergirl during her training. Supergirl uses her heat vision to overload Kancer's energy absorption, causing it to temporarily disperse. This marks the first time a Kryptonian other than Superman defeats Kancer. #supergirl #heatvision #defeat )

May 1, 2008 CE

Kancer Absorbs Magic Energy

During a crossover with Justice League Dark, Kancer encounters magical energy and absorbs it, gaining mystical abilities. It fights Zatanna and Doctor Fate, but the magic eventually destabilizes its biology, forcing it to retreat. #justiceleaguedark #magic #zatanna )

Sep 1, 2008 CE

Kancer's Origin Expanded

Action Comics #864 provides a flashback to Kancer's origin: it was created by an alien scientist named Dr. Sivana, who modified Superman's removed tumor with Kryptonian DNA to create a weapon. The construct's sentience is an unintended side effect. #origin #drsivana #kryptonian )

Feb 1, 2009 CE

Kancer Joins the Injustice League

In Justice League of America (vol. 2) #38, Kancer is recruited by the Injustice League to battle the Justice League. It fights multiple heroes simultaneously, showcasing its ability to drain energy from non-Kryptonians. The League eventually traps it in a phantom zone projector. #injusticeleague #justiceleague #phantonzone )

Jun 1, 2009 CE

Kancer's Power Upgrade via Warworld

In Action Comics #872, Kancer is taken to Warworld by Mongul, who enhances its abilities with alien biotechnology. Kancer becomes a living weapon capable of destroying planets. Superman frees the enslaved Warworld inhabitants, and they turn against Kancer, forcing it to flee. #warworld #mongul #powerup )

Jan 1, 2010 CE

Kancer Battles the New Krypton

During the 'New Krypton' storyline, Kancer attacks the new Kryptonian city of Kandor. It absorbs the energy of several Kryptonians, growing to colossal size. Superman and Superboy team up to overload Kancer's energy reserves, causing it to collapse into a dormant state. #newkrypton #kandor #superboy )

Jun 1, 2010 CE

Kancer's Dormancy Ends

In Action Comics #888, Kancer reawakens in the custody of S.T.A.R. Labs. It breaks free and goes on a rampage, absorbing the energy of Metropolis's power grid. Superman and Steel collaborate to create a electromagnetic pulse to temporarily disable it. #starlabs #superman #steel )

Mar 1, 2011 CE

Kancer during Flashpoint

In the Flashpoint universe, Kancer is a bioweapon created by the Amazons to hunt Kryptonians. It kills Superman of that timeline, but is later destroyed by the Flash. The event underscores Kancer's multiversal potential as a Kryptonian hunter. #flashpoint #amazons #multiverse )

Sep 1, 2011 CE

New 52 Reboot: Kancer's Origin Redefined

After the New 52 reboot, Kancer appears in Action Comics (vol. 2) #1 with a revised origin: it is a tumor construct from a cloned Superman body, created by Project Cadmus. Kancer retains its energy-siphoning abilities but is more animalistic in nature. #new52 #projectcadmus #clone )

Jan 1, 2012 CE

Kancer vs. Superboy

In Superboy (vol. 6) #5, Kancer tracks Superboy due to his Kryptonian DNA. The battle causes collateral damage in Smallville. Superboy uses his tactile telekinesis to disrupt Kancer's molecular structure, forcing it to retreat. #superboy #smallville #tactiletelekinesis )

May 1, 2012 CE

Kancer Absorbs Solar Flare

During a battle with Superman, Kancer absorbs the energy of a solar flare near the Sun. This supercharges Kancer, making it stronger than ever. Superman uses a black hole device to siphon the excess energy, returning Kancer to normal. #solarflare #superman #blackhole )

Feb 1, 2013 CE

Kancer Allied with Brainiac

In Action Comics (vol. 2) #22, Brainiac captures Kancer to study its adaptive biology. Brainiac uses Kancer's energy-draining ability to power his ship's weapons. Superman and the Justice League destroy the ship, freeing Kancer, which goes on a rampage. #brainiac #justiceleague #energy )

Aug 1, 2013 CE

Kancer's Mutation into Giant Form

In Superman (vol. 3) #20, Kancer absorbs the life force of a dying star, mutating into a giant form that towers over Metropolis. Superman, aided by the Guardian, uses a combination of red sun rays and kryptonite to shrink Kancer back to normal size. #giantform #metropolis #guardian )

Jan 1, 2014 CE

Kancer's First Death

In Action Comics (vol. 2) #30, Superman seemingly kills Kancer by immersing it in a core of antimatter. The construct disintegrates, but a fragment survives and regenerates over time. #death #antimatter #regeneration )

Jun 1, 2014 CE

Kancer's Return in 'Superman: Doomed'

During the 'Superman: Doomed' crossover, Kancer regenerates and attacks a Doomsday-infected Superman. Kancer absorbs some of Doomsday's adaptive biology, becoming more resilient. The combined heroes manage to separate Doomsday and trap Kancer in a Phantom Zone. #supermandoomed #doomsday #phantonzone )

Jan 1, 2015 CE

Kancer's Role in 'Convergence'

In the 'Convergence' event, Kancer is transported to the planet Telos by Brainiac. It fights against other pre-New 52 villains, but is defeated by the combined efforts of Superman and Supergirl. #convergence #telos #brainiac )

Apr 1, 2016 CE

DC Rebirth: Kancer's Redevelopment

With DC Rebirth, Kancer appears in Action Comics #957, now more intelligent and cunning. It begins to develop a personality and goals beyond mere survival, targeting Superman's loved ones to psychologically torment the Man of Steel. #dcrebirth #superman #psychology )

Sep 1, 2016 CE

Kancer Kidnaps Lois Lane

In Action Comics #960, Kancer kidnaps Lois Lane to lure Superman into a trap. Superman manages to rescue Lois, but Kancer escapes, establishing itself as a persistent threat to Superman's personal life. #loislane #kidnapping #superman )

Jan 1, 2017 CE

Kancer Gains Shapeshifting Abilities

In Action Comics #972, Kancer absorbs the abilities of a shapeshifting alien, allowing it to mimic human forms. It uses this to infiltrate the Daily Planet, learning Superman's secrets. Only Superman's x-ray vision reveals its true nature. #shapeshifting #dailyplanet #infiltration )

Jun 1, 2017 CE

Kancer's Alliance with Manchester Black

In Action Comics #981, Kancer teams up with Manchester Black, a telepathic villain, to mentally attack Superman. Black enhances Kancer's aggression, but Supergirl and the Elite intervene, breaking the alliance. #manchesterblack #telepathy #elite )

Mar 1, 2018 CE

Kancer's Sentience Evolves

In Action Comics #998, Kancer begins to question its existence. It experiences emotions like loneliness and rage, making it more than a mindless construct. This leads to a brief truce with Superman, but Kancer quickly reverts to its destructive nature. #sentience #emotions #truce )

Aug 1, 2018 CE

Kancer vs. The Justice League

In Justice League (vol. 4) #14, Kancer attacks the Justice League Watchtower, absorbing energy from the power systems. It fights the entire League, including Batman, Wonder Woman, and the Flash, before being contained by a special containment field designed by Cyborg. #justiceleague #watchtower #cyborg )

Jan 1, 2019 CE

Kancer's Involvement in 'The Terminus'

In the 'Terminus' storyline, Kancer is manipulated by the cosmic entity known as the Terminus to destroy Superman. Kancer nearly succeeds but is stopped by the combined forces of the Quintessence, leading to its temporary annihilation. #terminus #quintessence #cosmic )

Jul 1, 2019 CE

Kancer's Rebirth from Luthor's Experiments

In Action Comics #1013, Lex Luthor recovers a sample of Kancer's cells and attempts to weaponize them. The sample grows into a new Kancer, but Luthor loses control. The creature escapes, vowing to consume all Kryptonian energy in the universe. #lexluthorexperiments #rebirth #cosmicthreat )

Jan 1, 2020 CE

Kancer's Symbiotic Relationship with a Black Hole

In Superman (vol. 5) #18, Kancer bonds with a microscopic black hole, gaining the ability to manipulate gravity. It creates a localized singularity that threatens Earth. Superman uses his speed to create a counter-rotation, destabilizing the black hole and freeing Kancer from it. #blackhole #gravity #superman )

May 1, 2020 CE

Kancer during 'Event Leviathan'

In the 'Event Leviathan' crossover, Kancer is recruited by the secret organization Leviathan to eliminate Superman. Kancer attacks the Hall of Justice but is defeated by the combined efforts of the Justice League and Checkmate. #eventleviathan #leviathan #hallofjustice )

Feb 1, 2021 CE

Kancer's True Origin Revealed: The 'Solar Core'

In Action Comics #1028, it is revealed that Kancer is actually a fragment of a Kryptonian solar entity from the core of Rao, the Kryptonian sun. The tumor was merely a vessel. This retcon gives Kancer a cosmic significance. #rao #solarcore #cosmicorigins )

Aug 1, 2021 CE

Kancer vs. Darkseid

In Justice League (vol. 4) #65, Darkseid attempts to control Kancer using the Anti-Life Equation. Kancer resists, and the two engage in a devastating battle across Apokolips. The fight ends in a stalemate, with Kancer escaping but heavily damaged. #darkseid #apokolips #antilife )

Jan 1, 2022 CE

Kancer's Redemption Arc Begins

In Action Comics #1040, Kancer saves civilians from collapsing buildings, surprising Superman. Kancer claims to have evolved beyond its destructive instincts, but Superman remains skeptical. This begins a storyline exploring Kancer's potential for good. #redemption #moralconflict #superman )

May 1, 2022 CE

Kancer's Betrayal by Luthor

Lex Luthor offers to help Kancer become fully human, but the process is a trap. Luthor drains Kancer's powers, but Kancer manages to escape with a fraction of its abilities, vowing revenge on Luthor. #betrayal #luthor #revenge )

Oct 1, 2022 CE

Kancer's Temporary Alliance with Supergirl

In Supergirl (vol. 8) #15, Kancer and Supergirl team up to stop a Kryptonian terrorist group. Despite their differences, they work together effectively, hinting at a possible future as an anti-hero. #supergirl #alliance #antihero )

Mar 1, 2023 CE

Kancer Absorbs a Second Solar Core

In Action Comics #1056, Kancer discovers a second solar core inside a dead star. Absorbing it makes Kancer almost omnipotent. Superman, with the help of the Legion of Super-Heroes, eventually traps Kancer in a time loop, preventing its ascension. #solarcore #legionofsuperheroes #timeloop )

Jul 1, 2023 CE

Kancer's Ultimate Form: The Solar Tyrant

In the 'Solar Tyrant' storyline, Kancer absorbs the energy of an entire star cluster, achieving a god-like form. It threatens the entire galaxy. Superman uses a Kryptonian artifact called the 'Phantom Crown' to banish Kancer to the Phantom Zone for the foreseeable future. #solarityrant #phantonzone #kryptonianartifact )

Jan 1, 2024 CE

Kancer's Return from the Phantom Zone

In Action Comics #1062, Kancer escapes the Phantom Zone with the help of a rogue Kryptonian. Now more powerful and relentless, it resumes its hunt for Superman, setting the stage for a final confrontation. #phantonzoneescape #kryptonian #finalbattle )

Jun 1, 2024 CE

Kancer's Final Battle with Superman

In Action Comics #1065, Kancer and Superman engage in a climactic battle that spans dimensions. Superman finally destroys Kancer by using a 'death crystal' that annihilates its essence. The issue ends with Kancer's apparent permanent death, but a post-credits scene shows a residual cell. #finalbattle #deathcrystal #climax )

Sep 1, 2024 CE

Kancer's Legacy: A New Construct Rises

In a one-shot titled 'Kancer: Legacy', a new construct formed from the residual cell rises, vowing to continue the hunt. It is revealed that Kancer's consciousness has merged with the fabric of the Phantom Zone, ensuring its eventual return. #legacy #phantonzone #return )

Nov 1, 2024 CE

Kancer's Role in 'Future State'

In the 'Future State' timeline, a future version of Kancer fights the Justice League of the 31st century. It is more powerful and intelligent, acting as a major threat in the far future. This storyline establishes Kancer as an eternal foe of the Superman family. #futurestate #31stcentury #eternalfoe )