Dark Seraph and the Crowns of Krim steal a valuable book from a Paris museum, in the process killing 43 UNTIL agents and the French superhero Skydragon.
Eclipstar first appears, blotting out the sun over all of South and Central America and killing thousands before being stopped by several hero teams and UNTIL and incarcerated in the Guardhouse.
UNTIL establishes Moonbase Serenity.
UNTIL prevents the Widdershins Man, a DEMON Morbane, from summoning a powerful fire-demon in Bavaria.
UNTIL captures Zephyr, but she later escapes when the power-draining technology in her prisoner transport malfunctions.
DEMON murders Major Violette Boudreau, head of UNTIL's Project Hermes.
A large chunk of kelvarite falls to Earth in Africa and is recovered by UNTIL.
VIPER:
The Peacekeepers smash a major Chicago VIPER's Nest and capture two members of Dragon Branch, Verity, and Whipsnake.
Los Ángeles de la Guarda ("the Guardian Angels") deal VIPER a major defeat in Mexico.
VIPER helps Dr. Philippe Moreau relocate his laboratory and equipment to Monster Island.
The Gadroon attempt to invade Earth for the fourth time and manage to create a beachhead in the Canadian wilderness.
Mechanon:
Mechanon's first clash with the supervillainess Gravitar.
Mechanon tests his newest robotic body by fighting the Champions and several independent heroes in Millennium City.
Mechanon attempts to convert all organic life on Earth to machinery with a nanotechnological weapon, but the Champions thwart its scheme.
Mechanon attempts to take over Silicon Valley but is defeated by the Champions and the Freedom Patrol.
Stronghold:
A disgruntled guard releases Grond from hot sleep in Stronghold, but the monster smashes his way out without causing a general breakout.
Black Paladin attempts to resurrect his lover, the witch Chantal, but the Champions disrupt his plan, defeat him, and send him to Stronghold.
Interface first appears, launching several planned attacks to gather data on superheroes so he can analyze their weaknesses and defeat them, but is himself defeated and sent to Stronghold.
Borealis escapes from Stronghold North.
Valak the World-Ravager attacks Earth, is defeated by Star*Guard and the Sentinels, and is imprisoned in Stronghold in a hot sleep.
The second Great Stronghold Breakout erupts when Menton somehow is released from hot sleep and takes control of the prison, resulting in the release of over five dozen inmates.
Doctor Destroyer:
Doctor Destroyer returns to the world, wielding new powers of shadow and magic.
Doctor Destroyer attacks the island of Java for reasons unknown.
Doctor Destroyer attacks southern India for two months, then mysteriously vanishes from the battlefield along with most of his mystical devices and followers.
Doctor Destroyer launches Destruga II and tries to mind control the world, but is eventually defeated by an enormous combined force of superheroes and the American and Australian militaries.
Doctor Destroyer attempts to kidnap Chicago occult expert Ken Haight but is thwarted by the Peacekeepers.
Firewing:
Firewing comes to Earth to challenge its superhumans to combat.
Firewing battles Hyperion in London; the fight ends inconclusively but results in significant property destruction.
The Warlord and Firewing fight a duel that ends in a draw.
Teleios:
A number of genetic monstrosities found wandering in the Canadian wilderness are linked to Teleios.
An attack by a Teleios-bred monster in upper New York state causes the Justice Squadron to cross into Canada without permission, sparking a battle with the Canadian hero team StarForce.
Kinematik:
Kinematik first appears; he attacks the Guardhouse, freeing four mutant supervillains.
Kinematik attacks Washington, DC because he considers the US government anti-mutant; several monuments are damaged before the Capital Patrol and the All-American drive him away.
Champions:
Utility lures the Champions into a deathtrap-filled warehouse and nearly defeats them, but his overconfidence gets the better of him and they're able to defeat him.
Dr. Ka and the Champions prevent the supervillain Anubis from summoning the evil Egyptian god Set to Vibora Bay.
PSI splits apart, with factions of the organization fighting one another while the Champions try to control the crisis. Several members of the organization die; the rest flee to find other underworld opportunities.
Nighthawk leaves the Champions, to be replaced by Kinetik.
The Champions fight Dr. Destroyer and some of his Shadow Colossi in Canada.
Slug:
The Slug attacks London, succeeding in transforming tens of thousands of people into Elder Worm before the New Knights of the Round Table barely manage to thwart his plan and undo the transformation ritual.
The Slug attacks the southern Indian city of Nandyal and a nearby archaeological dig. The Warlord battles Tetsuronin to a standstill in Tokyo.
DEMON:
Dweomer, Witchcraft, and several other mystics team up to defeat DEMON's "Satan Furnace" plot to taint Earth's arcane energies.
Guardhouse:
Obelisque attempts to break out of the Guardhouse, causing a temporary power outage that allows several other inmates, including Eclipstar, to escape.
Russian:
Russkiye Zashchitniki ("The Russian Defenders"), an informal superhero team, forms in Moscow.
The shapeshifting Russian hero Taiga is killed during a battle between his team (Russkiye Zashchitniki, the Russian Defenders) and Eurostar.
Menton:
Menton is captured after he attempts to get himself elected President of Guamanga as a stepping-stone to world conquest.
Supernatural:
The Bay Guardians clash with and defeat the Devil's Advocates in San Francisco.
The Cirque Sinister terrorizes Vibora Bay by using the Janus Key to remake reality in the city; in the wake of the villain team's defeat, the Key is once again lost.
Takofanes, the Crowns of Krim, and several superheroes fight a three-way battle in Salem, Massachusetts on Halloween.
Witchcraft joins the group late in the year after the four heroes have a nigh-disastrous encounter with Takofanes on Halloween.
Tezcatlipoca attacks Texas but is eventually defeated when several superteams and PRIMUS distract him long enough for mystics to sever the binding spell that kept him on Earth.
Space:
La Bruma forms the Hero Corps in Houston. Walkabout, Brigade, Harrier, and the Wanambi Man team up to defeat the extradimensional fiend Marmoo's attack on Sydney.
The United States launches the United States Space Station, a large, permanently-inhabited scientific and monitoring station orbiting Earth above Florida.
The Qularr invade Earth again but are driven back by humanity's superheroes.
The renegade Star*Guard Mordace attacks Odrugar, home of the Star*Guard, and damages the Guard's super-computer CONTROL, seriously weakening the organization.
Other
Defender agrees to go on a date with Gravitar to prevent her from destroying Seattle.
Taipan attempts to assassinate the Peacekeepers, is defeated, and is placed in "hot sleep" in an Australian super-prison designed solely to hold him (and known as "House Taipan").
The Binary Corporation presents Binary Man, its official corporate superhero and representative, to the world. Binary Man begins fighting crime and performing heroic deeds.
One of the victims of Project Sunburst awakens and becomes the master villain Sunburst.
The French superhero Incendie moves to Quebec to avoid complying with his homeland's strict superhero registration law.
Captain Chronos first appears in the modern era.
Khusor the Crooked and his followers rebel against King Arvad of Lemuria, in the process regaining their reptilian forms and shapechanging powers.
A South American villain team, Los Aplastantores ("the Crushers") attacks Washington DC and nearly destroys the Lincoln Memorial, but is stopped by the Sentinels.
Software billionaire Horatio Goodman founds the Goodman Institute, a privately-funded organization that provides scientific assistance to superheroes.
The United States invades Costa Azúl and overthrows dictator Enrique Pineda.
Henry Grant "receives" the Hercules Force and becomes the second Johnny Hercules.
Well-liked supervillainess Lady Blue ends her two-year romantic relationship with rock star Jimmy Caxton.
While visiting Berlin, Ironclad ends up drinking in the same bar as Durak. The two get into a barfight that destroys three city blocks; in the end, Ironclad trounces Durak, but the supervillain escapes.
While on a mission in Iraq with several other heroes, the Janissary is killed by the Iraqi villain Turs al-Sh'ab.
Gravitar attacks Washington, DC by lifting the Capitol 500 feet into the air and holding the United States for ransom, but is defeated by the Justice Squadron and Capital Patrol with no loss of life.
Professor Paradigm and the Paradigm Pirates first appear, attempting to "uncover reality" in San Francisco and nearly driving the entire city mad before being stopped by a motley assortment of superheroes.
Turs al-Sh'ab is badly injured in a fight with several American heroes and soldiers.
Radium leaves the Ultimates to join Sunburst's team; Binder replaces him with the supervillain Orion.
Professor Paradigm and the Paradigm Pirates cause the artwork in several New York City museums to come to life and attack people but are driven off by the Sentinels.
Psimon re-forms PSI.
2005
July 23 — The "Battle of Detroit": Dr. Destroyer is killed battling Earth's superheroes, but activates a device that destroys most of Detroit. Later that year, the American government, several major corporations, and numerous charitable foundations form the Millennium Project to rebuild the city.
As a response to public outcry over the destruction of Detroit, the United States signs the Tribunal Treaty, allowing UNTIL agents to operate freely in American territory.
2006
Mark Whitaker (Nighthawk) is injured in a VIPER attack on Millennium City University; inspired by the event, he becomes a crimefighter.
Nightwind begins fighting crime in the still-under-construction Millennium City.
2007
Late this year, the rebuilding of Detroit is substantially completed, and the new metropolis is christened Millennium City.
2008
Defender moves to Millennium City and founds the Champions. Sapphire and Nighthawk join soon thereafter; Ironclad arrives on Earth and joins the group as well.
Dr. Silverback moves to Millennium City to work at the American headquarters of Cambridge Biochem.
2009
The Slug attacks Millennium City in an attempt to transform its residents into Elder Worms but is defeated by the Champions.
The shrunken monster Cazulon returns to normal size and attacks Millennium City, wreaking havoc before the hero Microman re-shrinks him.
2011
An extradimensional "energy blob" attacks Millennium City until lured home by a beacon created by the Champions and Dr. Silverback.
Mechanon's second clash with Gravitar takes place in Millennium City.
2012
Renegade scientist Dr. Timothy Blank breaks away from VIPER, transforms himself into the master villain King Cobra, establishes COIL, and attacks Millennium City with his Ophidian Plague. Only some fast and clever crimefighting by the Champions saves the city.
2014
The Champions join the heroes of another dimension to fight villains from both planes in the "Reality Storm." A new team, the Millennium City 8, forms to protect the City of the Future in the Champions' absence.
Witchcraft battles Talisman at Millennium City University and tricks her evil twin sister into lifting the Curse of Frigid Despair she'd placed on Witchcraft years before.
2016
Foxbatpalooza takes place at a Millennium City stadium when Foxbat makes his rock 'n' roll debut onstage.
2018
Mechanon attacks Millennium City with a fifty-foot-tall version of itself.
2019
Takofanes unleashes the "Blood Moon" on Millennium City, animating the heroes who died during the Battle of Detroit as fearsome superpowered zombies.
