The Squadron Sinister was a team of super-villains created by the Grandmaster, after he had encountered the Squadron Supreme during one of his time-travels. He returned to his own universe and transformed three men (Doctor Spectrum, Nighthawk, and the Whizzer) into counterparts of the Squadron members. He also created a counterpart to the Squadron’s Hyperion out of non-living extra dimensional matter and invested it with consciousness and artificial memories. These four counterparts became the criminal team known as the Squadron Sinister.

Biography

They were first used in one of the Grandmaster's games against Kang the Conqueror, where they were pitted against the Avengers, but were unable to defeat them. After the game, the Grandmaster abandoned the defeated Squadron, including Hyperion, who was left floating through outer space in a small glass globe as a result of his battle with Thor. The rest of the members went their own separate ways with Nighthawk retiring from a life of crime and Doctor Spectrum later being defeated by Iron Man and had his Power Prism destroyed.

The Squadron Sinister was later reformed by Nebulon the Celestial Man. Nebulon was searching the galaxy for other planets that possessed resources that would help keep his own planet alive. During this expedition, Nebulon came across Hyperion who was still floating helplessly through space in a glass globe. Hyperion wanted revenge on humanity and so offered to sell the Earth to Nebulon. Nebulon agreed on the condition that the Earth be fully submerged under water. Hyperion wanted the assistance of his former colleagues in the Squadron Sinister, so Nebulon restored Doctor Spectrum's Power Prism and located the Whizzer and Nighthawk. Nighthawk was horrified at the plan that the Squadron presented to him, which involved melting the polar ice caps with a giant laser cannon before selling the world to Nebulon, and left the group. He tried to alert his old foes, the Avengers, but was unable to due to a spell placed upon him by Nebulon. Richmond, however, overheard the Avengers discussing the Defenders and went to warn that group instead.

The Defenders, with Nighthawk's help, defeated both the Squadron Sinister and Nebulon. Nebulon expended so much energy during the battle that he was forced to abandon the disguise he was using and revert back to his true form which disgusted the members of the Squadron. Nighthawk turned the laser cannon that was being used to melt the icecaps on Nebulon, forcing so much energy upon him that he imploded, seemingly taking the other three members of the Squadron with him. The laser canon then exploded as a result of the tremendous energy expenditure and Nighthawk nearly died. His life was saved by the quick actions of Doctor Strange who used a spell to give a fraction of each of the Defenders life essences to Nighthawk, thereby restoring him to health. Nighthawk was then offered admittance into the ranks of the Defenders.

Months later, the other members of the Squadron Sinister resurfaced. It was revealed that, rather than being destroyed, Nebulon and the Squadron were transported into the an extra-dimensional world called Zaar. Here they met a race of philosophers known as the Ludberdites. Nebulon eventually returned the Squadron to Earth with a weapon that would allow them to get revenge on the Defenders, while he decided to stay behind to learn the secrets of the Ludberdites philosophy. Before the Squadron could even manage to mount an attack on their old foes, however, the Defenders stormed into their secret hideout, somehow learning of their return to Earth. The Defenders mistakenly believed the Squadron to be the ones behind the planting of a car-bomb in their old teammate's (Nighthawk's) car. The Squadron initially defeated and captured the Defenders but, with the aid of Yellowjacket, they soon escaped and subdued the Squadron again.

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Comics
Abomination | Abominatrix | Absorbing Man | Adolf Hitler | Agony | A.I.M. | Air-Walker | Alkhema | Aleksander Lukin | Alistair Smythe | Amatsu-Mikaboshi | Amora | Annihilus | Ani-Men | Answer | Apocalypse | Arcade | Ares | Arkon | Arnim Zola | Atlas | Attuma | Avalanche | Awesome Android | Badoon | Barracuda | Baron Blood | Baron Mordo | Baron Wolfgang von Strucker | Baron Zemo | Baron Zemo II | Basilisk | Batroc | Beetle | Beyonder | Black Knight | Blackout | Black Order | Black Cat | Black Talon | Black Widow | Blackie Drago | Blastaar | Blitzkrieg | Blizzard | Blob | Blood Brothers | Bombshell | Boomerang | Brothers Grimm | Brotherhood of Evil Mutants | Bullseye | Burglar | Bushmaster | Bushwacker | Cache | Carnage | Carrion | Calypso | Celestials | Centurion | Chameleon | Chance | Chemistro | Chester Goudal | Chitauri | Collector | Colonel Ross Whittaker | Commander Kraken | Constrictor | Corruptor | Count Nefaria | Cowled Commander | Crime-Master | Crimson Dynamo | Cristu Bulat | Crossbones | Crossfire | Daken | Damage | Daniel Whitehall | Dark Avengers | Dark Elves | Deadpool | Deathbird | Deathurge | Death Adder | Deke Wainscroft | Demogoblin | Diablo | Doctor Doom | Doctor Faustus | Doctor Octopus | Doctor Spectrum | Dormammu | Dracula | Dreadknight | Eddie Brock | Eel | Egghead | Ego the Living Planet | Electro | Elementals | Elements of Doom | Enclave | Enforcers | Equinox | Exodus | Ezekiel Stane | Fabian Cortez | Famine | Fin Fang Foom | Finn Cooley | Firelord | Fixer | Fold | Frost | Frost Giants | Frightful Four | Galactus | Gargantus | Garthan Saal | Ghost | Goliath | Gladiator | Godzilla | Grand Director | Grandmaster | Grant Ward | Graviton | Green Goblin (Norman Osborn, Harry Osborn) | Grey Goblin | Griffin | Grim Reaper | Grizzly | Growing Man | Grotesk | Hammerhead | Hand | Hazmat | Hela | Hera | Herr Kleiser | Heinz Kruger | High Evolutionary | Hitman | Hive | Horsemen of Apocalypse | Hobgoblin | Hydro-Man | HYDRA | Immortus | Ironclad | Jackal | Jack O' Lantern | Jester | Jigsaw | Johnny Ohm | Jonas Hambleton | Juggernaut | Justin Hammer | Kaine | Kang the Conqueror | Killer Shrike | King Cobra | Kingpin | Klaw | Knull | Korvac | Kraven the Hunter | Kree | Lady Deathstrike | Leader | Lightmaster | Living Brain | Living Laser | Living Monolith | Lizard | Loki Laufeyson | Lucia Von Bardas | Ma Gnucci | Machinesmith | Mad Pharaoh | Madame Masque | Madame Viper | Madcap | Madelyne Pryor | Maelstrom | Maginty | Magneto | Magus | Malekith the Accursed | Man-Ape | Mandarin | Mandrill | Man-Spider | Man-Wolf | Master Man | Master Pandemonium | Masters of Evil | Masked Marauder | Maximus the Mad | Melter | Menace | Mentallo | Mercurio the 4-D Man | Mesmero | Mephisto | Mister Fear | Mister Hyde | Mister Negative | Mister Payback | Mister Sinister | M.O.D.A.M. | M.O.D.O.K. | Mojo | Molecule Man | Mole Man | Molten Man | Moonstone | Morbius the Living Vampire | Morgan le Fay | Moses Magnum | Mystique | Mysterio | Namor | Nebula | Nekra | Nicky Cavella | Nightmare | Nightshade | Niles Van Roekel | Nicky Cavella | Obadiah Stane | Omega Red | Onslaught | Overdrive | Owl | Paladin | Phalanx | Phil Urich | Piledriver | Pluto | Presence | Princess Python | Proctor | Psycho-Man | Puppet Master | Puma | Purple Man | Quasimodo | Quicksand | Radioactive Man | Ragnarok | Ramrod | Reavers | Red Ghost | Red Skull | Reverend Samuel Smith | Rhino | Rhino II | The Rose | Ringer | Ringmaster | Riot | Ronan the Accuser | Roxxon | Sabretooth | Sandman | Säurespritze | Sauron | Savage Land Mutates | Scarecrow | Scarlet Witch | Scorcher | Scorpion | Screaming Mimi | Sebastian Shaw | Secret Empire | Selene Gallio | Sentinels | Sentry 459 | Serpent Society | Shriek | Shocker | Shockwave | Sidewinder | Silver Sable | Sin | Sinister Six | Skaar | Skeleton Crew | Skrulls | Slug | Space Phantom | Spider-Man Revenge Squad | Spider-Slayers | Spot | Squadron Sinister | Stranger | Street | Superia | Super-Adaptoid | Super-Apes | Super Patriot | Super-Skrull | Supreme Intelligence | Superia | Surtur | Swarm | Swordsman | Symbiotes | Tarantula | Taskmaster | Technovore | Temugin | Ten Rings | Terminus | Thanos | Thunderball | Thunderbolts | Thunderbolt Ross | Thundersword | Tiger Shark | Tinkerer | Titania | Titanium Man | Toad | Tombstone | Trapster | Trick Shot | Terrax the Tamer | Typhoid Mary | Tyrannus | U-Foes | Ulik | Ultimus | Ultron | Unicorn | Universal Church of Truth | Vapor | Vector | Venom | Vermin | Vulture | Walrus | Warlord Krang | Whiplash | Whirlwind | White Rabbit | Will-O'-The-Wisp | Winter Soldier | Wizard | Wonder Man | Wrecker | Worthy | X-Ray | Yellow Claw | Ymir | Yon-Rogg | Zahnmörder | Zodiac | Zzzax

Television
The Avengers: United They Stand: Ultron | Kang the Conqueror | Swordsman | Ringmaster | Masters of Evil (Baron Zemo & Whirlwind) | Attuma | Zodiac (Taurus & Scorpio) | Egghead | Scarlet Witch | Grim Reaper
The Super Hero Squad Show: Doctor Doom | Mole Man | Fin Fang Foom | Abomination | Wrecker | Thunderball | Piledriver | M.O.D.O.K. | Klaw | Toad | Melter | Dormammu | Sabretooth | Juggernaut | Pyro | Whirlwind | Zzzax | Enchantress | Baron Mordo | Punisher | Egghead | Ringmaster | Skrulls (Super-Skrull) | Trapster | Mystique | Impossible Man | The Leader | Mad Thinker | Skurge | Crimson Dynamo | Batroc the Leaper | Loki Laufeyson | Magneto | Quicksilver | Scarlet Witch | HYDRA (Red Skull , Arnim Zola & Baron Wolfgang von Strucker) | Galactus | Terrax the Tamer | Firelord | Stardust | Thanos | Kree | Ego the Living Planet | Grandmaster | Annihilus | Nebula | Ronan the Accuser | Nightmare | Ultron | Dark Surfer | Sentinels | Dracula | High Evolutionary
Avengers: Earth's Mightiest Heroes: HYDRA (Red Skull, Baron Von Strucker, Grim Reaper, Arnim Zola, Doughboy & Madame Viper) | Masters of Evil (Baron Zemo, Enchantress, Skurge, Chemistro, Abomination, Crimson Dynamo & Grey Gargoyle) | A.I.M. (M.O.D.O.K.) | Kree Empire (Supreme Intelligence, Colonel Yon-Rogg & Ronan the Accuser) | Absorbing Man | Klaw | Ultron | Wrecker | Thunderball | Piledriver | Red Hulk | Frost Giants (Loki Laufeyson & Ymir) | Technovore | Bi-Beast | The Leader | Whirlwind | Kang the Conqueror | Man-Ape | Malice | Mad Thinker | Mandrill | Graviton | Fenris Wolf | Lucia Von Bardas | Zzzax | Blizzard | Constrictor | Griffin | Living Laser | Whiplash | King Cobra | Magneto | Wendigo | Skrulls (Super-Skrull) | Malekith the Accursed | Hela | Doctor Doom | Surtur | Glenn Talbot | Winter Soldier | J. Jonah Jameson | Destroyer | Annihilus | Purple Man | Galactus | Firelord | Stardust | Terrax the Tamer
Avengers Assemble: HYDRA/A.I.M. (Red Skull, M.O.D.O.K., Blood Brothers, Grim Reaper, Crossbones & Baron Wolfgang von Strucker) | Doctor Doom | Ulik | Dracula | Hyperion | Wrecker | Thunderball | Piledriver | Destroyer | Loki Laufeyson | Chitauri | Justin Hammer | Mojo | Galactus | Ringmaster | Black Order (Thanos) | Hela | Winter Soldier | Nighthawk | Dormammu | Ultron | Roxxon Energy Corporation | Absorbing Man | Titania | Whirlwind | Fin Fang Foom | Masters of Evil (Baron Zemo, Beetle & Goliath) | Klaw | Ghost | A.I.M. (Kang the Conqueror, Whiplash & Spymaster) | Abomination | Kree Empire | Egghead | The Leader | Crimson Widow | Typhoid Mary | Ares | Taskmaster | Doughboy | Ulik | Symbiotes | Morgan le Fey | Tiger Shark | Erik Killmonger | Man-Ape | Madame Masque | Kraven the Hunter | Vulture

Movies
Ultimate Avengers 1 & 2: Herr Kleiser | Chitauri
Next Avengers: Heroes of Tomorrow: Ultron
The Avengers: Loki Laufeyson | Chitauri (The Other & Leviathans) | HYDRA (Gideon Malick & Jasper Sitwell) | Georgi Luchkov | Thanos
Avengers: Age of Ultron: Ultron | Ultron Sentinels | HYDRA (Wolfgang von Strucker, List, Scarlet Witch & Quicksilver) | Ulysses Klaue | Madame B | Chitauri (Leviathans) | Thanos
Avengers: Infinity War: Black Order (Thanos, Ebony Maw, Proxima Midnight, Corvus Glaive, Cull Obsidian, Nebula, Outriders, Chitauri & Leviathans) | Red Skull | The Collector | Loki Laufeyson | Winter Soldier | M'Baku | Scarlet Witch | Thunderbolt Ross
Avengers: Endgame: Black Order (Thanos, Ebony Maw, Proxima Midnight, Corvus Glaive, Cull Obsidian, Nebula, Outriders, Sakaaran Mercenaries, Chitauri, Leviathans & Chitauri Gorillas) | HYDRA/STRIKE (Red Skull, Alexander Pierce, Crossbones, Jasper Sitwell & Jack Rollins) | Loki Laufeyson | Winter Soldier | M'Baku | Scarlet Witch | Kraglin Obfonteri | Dark Elves | Thunderbolt Ross | Akihiko

Video Games
Marvel's Avengers: M.O.D.O.K. | Monica Rappaccinni | Abomination | Taskmaster

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