(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Born on Siberia's Ust-Ordynsky Collective, Piotr Rasputin was the younger brother of Russia's greatest hero Mikhail Rasputin and served by his side as a Soviet Super Soldier. When Apocalypse's forces came to Moscow, Mikhail fought them off but was captured and forced to become a Horseman.
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Colossus became leader of the Super Soldiers and faced his brainwashed brother in combat. Mikhail destroyed all of Russia's super heroes except his brother. The severely beaten Colossus chose to dedicate his life to stopping Apocalypse and Mikhail and joined Magneto's cause.
(Generation Next I#1 (fb) - BTS) - Peter believed himself the only member of his family still alive after Apocalypse's campaigns through Eastern Europe and Asia. As a result, he had no idea his young sister Illyana was taken to the United States as a prisoner.
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Magneto moved his students to Transia where he set up a base on Mount Wundagore. There, aided by the evolved cow-woman Bova, he provided a place for young mutants to learn how to master their powers and fight for genetic equality. The best among them received special training as a team known as the X-Men.
(X-Men Chronicles I#1 (fb) - BTS) - To ensure his young wards had the best possible chance of survival, Magneto proved to be a stern, often brutal taskmaster. He subjected his most promising recruits to daily, rigorous training exercises in a combat simulator his students dubbed "The Killing Zone".
(X-Men Chronicles I#1) - Magneto surprised Colossus and the others by shifting the Killing Zone to level four after he caught them celebrating the fact they had just beaten its third level. He then shocked them even more by introducing Weapon X as their newest, most dangerous member. Logan immediately proved this by succumbing to a berserker rage that the inexperienced telepath Jean Grey tempered with Magneto's guidance. Only a few short hours later they went on their first mission to the United States when Apocalypse and his heralds attacked Cape Citadel to claim the United States' nuclear stockpile.
(X-Men Chronicles I#1) - Magneto led the X-Men in opposing Candra's forces who attacked to buy Gideon time to gain control of the nuclear missiles. While Magneto went inside to stop Gideon, Colossus and the others focused on Candra and her troops. Colossus and Iceman teamed up to stop War. After Candra and his underlings were defeated, Apocalypse showed himself briefly to gloat while ordering his Ship to fire on the young mutants and Sabretooth, who had betrayed him.
(X-Men Chronicles I#1) - Magneto protected his team from Ship's weapons with a wide magnetic pulse. After Apocalypse left, he congratulated the X-Men on their first successful mission. But by the time they returned home to Wundagore, Colossus and the others had to mourn the loss of one of her own: in their absence, Apocalypse's son Nemesis had attacked Wundagore, resulting in the death of Wanda Maximoff.
(X-Men Chronicles I#2
(fb) ) - Colossus attended the service for Wanda Maximoff who was laid
to rest on Mount Wundagore. (Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - During his first solo mission as an X-Man, Colossus battled Sabretooth for the life of a young mutant named Katherine Pryde.
(X-Men Chronicles I#2) - Colossus was present when Weapon X and Jean Grey left the team over a falling out with Magneto who had decided to abandon Jean during a recent mission. Magneto forced the remaining X-Men to keep up the pace, taking Peter and the others to Denver to fight off a horde of bandits. Seeing humans turns on their own kind left him wondering why they'd work for Apocalypse's forces who hated all humans. His teammate Sabretooth explained that some people would do anything to get a leg up in this world. Colossus and the X-Men later faced Apocalypse's agent Wolverine, who was so powerful not even Peter's immense strength could bring him down. In the end, Gambit's powers won the day he wound up blasting the villain away.
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Without her mentor Weapon X around, Kitty grew closer to Colossus. They fell in love and would eventually marry (see comments).
(Tales from the Age of Apocalypse I#2) - Colossus joined the X-Men in their underground Kentucky base for an intelligence briefing on Apocalypse. Nightcrawler had learned Apocalypse was recovering from recent injuries aboard his Celestial Ship. Colossus could not believe such a giant vessel could be hidden on Earth, which led to the reveal it was, in fact, on the Moon (see comments).
(X-Men: Age of Apocalypse
One-Shot I#1) - Colossus grew tired and demoralized after years of
constant combat and death. During a mission to Wakanda to destroy a
proto-Sentinel facility he lost the will to fight all together. While
his teammates fought for their lives, he simply sat back and wondered to
himself. He returned home to the X-Men's base a broken man. Peter was
comforted by his wife who told him they had every right to live their
own lives, to get away from this madness and to start their own family.
Kitty also decided she had enough. As if on cue, Magneto entered the
couple's quarters to propose that they used their collective experience
to teach the next generation of mutants, showing them images of future
Generation Next members including Husk, Mondo, Skin and Vincente.(Generation Next I#1 (fb) - BTS) - Shadowcat and Colossus took their band of young mutants to Colorado where they established a base inside The Tomb, an old, abandoned castle in the Rocky Mountains. Their recruit Know-it-all was granted her own computer lab in the catacombs from which she helped her teachers run the base. She used her control over machinery to set up weapons gauntlets in the woodlands near the Tomb that Kitty and Peter used for combat exercises.
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Magneto asked Colossus to return to active duty to carry out an unrevealed mission that left him so injured, only Magnus' control over metal kept him alive. As a result, he could no longer revert to his human form.
(X-Men Chronicles I#2) - Shadowcat and Colossus, along with their recent recruit Skin, helped save young British psionic Jonothon Starsmore from Mikhail Rasputin and his forces. Jonothon joined the team as Chamber.
(Generation X I#1 (fb) - BTS) - Battle-hardened after years of strife, Colossus and Shadowcat were ruthless towards their students. To make sure they were ready for the war against Apocalypse, the duo had them constantly on edge, often having them engage in kill or be killed scenarios.
(Age of Apocalypse: The Chosen I#1) - Apocalypse took special interest in Colossus when he compiled his Chosen files. En Sabah Nur deemed Rasputin worthy of survival, even noting that his apparent lack of empathy towards those put in his care could potentially make him a very valuable asset.
(X-Men Alpha I#1 (fb) - BTS) - When Magneto learned from the mysterious Bishop that their reality was a mistake, he intended to set things right. He reached out to various X-Men allies, including Peter and Kitty. He ordered them to prepare the students for a mission he was coming to Colorado to inform them about.
(Generation Next I#1) - While
waiting for Magneto to arrive, Colossus and Shadowcat put their young
wards through their paces in the woodlands. After the team had survived
for three minutes, Colossus joined the fray with Kitty hiding inside
him. Peter demanded to know why Chamber as team leader had still left
people alive. Chamber tried to blast his teacher with his powers, but
Colossus prevented him from firing. He went on call his pupils weak,
sentimental dreamers. This left him open to Husk who jumped on his back
and turned into acid. As her husband burned, Shadowcat emerged from his
backside to claw at Husk. This went on until Husk
learned her lesson and turned into a gaseous bio-pattern that Kitty's
phasing was useless against. As soon as his wife appeared to be in
danger, Colossus flew into a frenzied rage. He was distracted by the
vaporous Vincente before the situation could turn dire. Moments later,
Magneto arrived to end the training. (Generation Next I#1 - BTS) - Before showing up to stop the combat drill, Magneto and his associate Bishop visited with Know-It-All who was asked to scan Apocalypse's databanks for information on chrono-variant mutants. She gathered a list of mostly deceased subjects like prelate Gallo and T. Edenfox, as well as Flashback who was missing in action.
(Generation Next I#1) - Kitty and Peter went inside with Magneto to have a meeting with Bishop and Know-It-All who presented her findings. Both Peter and Kitty expressed concern for their student's safety. If the Shadow King were to catch her psi-surfing Apocalypse's files, she risked instant lobotomization. Undeterred, Know-It-All continued her presentation which ended when Colossus was stunned to find his young sister was on the list. He had thought she'd died, but Know-It-All confirmed Illyana was being held at The Core, Apocalypse's main power plant in Seattle. Figuring Illyana's latent temporal abilities were their best bet, Magneto ordered the team to rescue the girl.
(Generation Next I#2 (fb) - BTS) - The news that his sister was alive made the taciturn, morose Colossus reckless and unpredictable. Kitty noticed the change in him, but felt she could do little to change his mind. Along with the students, they came up with a plan to get Illyana out. The team was to infiltrate the facility while their teachers would go around the back to serve as ace in the hole.
(Generation Next I#2 - BTS) - Know-It-All remained behind in the Tomb to monitor the rescue mission.
(Generation Next I#2) - Arriving at the Core incognito, Shadowcat was astounded by its imposing size. When she expressed her incredulity at being expected to break into there, Colossus coldly dismissed her concerns: "If you do not feel up to this, Katya, I am more than willing to do it alone." All she could do was whisper to herself: "That's what I'm afraid for."
(Generation Next I#2) - When Colossus walked off, Kitty was left muttering to herself and about to light a cigarette when she was attacked by the Undercloaks, Sugar Man's assassins who preferred to strike from the shadows. Colossus rushed to his wife's aid, but she didn't need much rescuing: popping her claws, she stabbed her assailants to death, hoping they caught them before they could warn their superiors.
(Generation Next I#3) -
Know-It-All concluded that her teammates were having problems inside The
Core. She risked her safety by contacting her teachers, projecting an
image of herself on the outside wall of The Core where Colossus and
Shadowcat were waiting for a signal to move in. Know-It-All told them
Skin, Chamber, Husk and Vincente were cornered and needed help while
Mondo was about to reach Illyana's location deep within the plant.
Taking Claudia's recommendations to heart, Peter and Kitty phased
through the wall of the Core to help their young wards.(Generation Next I#4 - BTS) - Peter and Kitty caused a massive disturbance when they crashed through the ceiling of the Core, immediately causing the distraction needed to get Illyana and the others to safety. Kitty remained hidden inside her husband who started barking orders at his students, telling them to get his sister. However, Mondo was killed by the Sugar Man while carrying Illyana inside his own body. Colossus jumped on the villain, seemingly splattering him and freeing the girl in the process. Reconnecting with most of their students, they set out to escape the Core but got drawn into the massive riots that had broken out following Colossus' arrival. Shadowcat offered to go after Skin and Chamber, but Colossus coldly reminded her of their mission: to bring Illyana to Magneto.
Generation Next I#4) - He ordered his wife to take him and Illyana out of there. Once safely outside the Core, Kitty wanted to go back but Peter offered to go instead, not wanting to risk losing both his wife and his sister. While Kitty waited with Illyana, Colossus tried to get back inside the Core. He pried open the massive doors and was about to go in, but when he saw that all his students except for Husk appeared beyond rescue, he decided to head back.
(Generation Next I#4) - When he returned alone, Kitty asked about the others. Peter lied and told her he did everything he could. "Sorry" was all he managed to say, a sentiment mirrored by Kitty. They quietly sat by the fire before heading to Westchester with Illyana (see comments).
(Amazing X-Men I#4 (fb) - BTS) - Peter and Kitty arrived with Illyana at the Xavier Estate. Finding the place empty, they came across a message from Quicksilver telling them Magneto and Bishop had been taken by Apocalypse's forces while young Charles and his robotic Nanny were missing as well. The note further stated that Quicksilver and his team had gone off to rescue Bishop from the Madri in Quebec, while Dazzler and Exodus went to search the tunnels for signs of Charles.
(Amazing X-Men I#4) -
Colossus and Shadowcat welcomed Rogue and her team of X-Men back from
their mission to halt Holocaust's cullings. They informed the new
arrivals of the situation, leaving Rogue shocked that they had lost all
their students. Colossus kept quiet and only focused on Illyana's
well-being. Not too long after that, Peter and Kitty witnessed Rogue
trying to kill Gambit when she learned he was responsible for letting
Charles fall into Apocalypse's hands. They were also on hand when
Quicksilver and Storm returned from Quebec with Bishop while
Nightcrawler teleported in with the mutant seer Destiny. Fascinated by
the fact that all of Magneto's disparate plans had more or less worked
out, Kitty and Peter joined the others in their preparations for a final
assault on Apocalypse's citadel.(X-Men Omega I#1) - Blink teleported Colossus, Shadowcat and the others to the Pens underneath Apocalypse's stronghold. They were ready for battle, but much to their surprise found the place was empty and abandoned, with only the injured Dark Beast present. When Rogue called this lucky, Colossus grew unreasonably angry: he was not about risk his sister's life on luck and demanded an explanation, much to his wife's concern.
(X-Men Omega I#1 - BTS) - Dark Beast told the X-Men about Apocalypse and his plans for the M'Kraan crystal. He was forced to tell them where the crystal was kept and got dragged along with the group. At the same time Nate Grey had freed Magneto from Apocalypse and Holocaust.
(X-Men Omega I#1) - Colossus slammed his way through the walls to enter the crystal chamber. When faced with the ever growing crystal, the seer Destiny sensed Bishop's claims about the alternate timeline were true. She told the X-Men that only she and Illyana could accompany Bishop. Colossus protested, but got distracted by X-Man and Holocaust who dropped through the ceiling and crashed through the floor to continue their fight. Magneto approached Illyana, asking her to help him create a better world. Colossus tried to keep his sister from agreeing, saying Magneto couldn't promise her that this new world would be better because he didn't know. This led Bishop to step in and assure her there would be at least hope there.
(X-Men Omega I#1 - BTS) - Illyana accompanied Bishop and Destiny into the expanding crystal. Colossus swore Magneto they would be enemies forever if something happened to her there.
(X-Men Omega I#1) Shadowcat and Colossus then joined the other X-Men in protecting the crystal and fighting off the hordes of Apocalypse. But after a while the frantic, erratic Colossus broke ranks and went barrelling towards the crystal, screaming that he was coming to join his sister, in death if need be.
(X-Men Omega I#1) - Shadowcat tried to block
his path, so confident that he would stop for her that she didn't bother
phasing. Colossus was too clouded by insanity to notice his wife, only
realizing what hat happened after he had trampled her to death. Now
completely mad with grief, he was killed by Gambit before he could cause
any more damage. As he lay dying, he reverted to his human form for the
first time in years. Illyana returned from inside the M'Kraan in time to
watch him perish. Before she could honor his request and hold his hand
when he passed, Quicksilver rushed her away to keep the child safe from
lurking attackers.(X-Men: Age of Apocalypse I#6 (fb) - BTS) - Colossus was eventually laid to rest in a graveyard near the Xavier Institute in Washington D.C. His burial plot was right next to his wife's.
(Age of Apocalypse I#6) -
Colossus along with Scott Summers were sent to accompany Azazel on his
good will mission to the mysteriously resurrected Monet St. Croix who
had been using her powers to sway giant crowds to her side. Monet had
little interest in Azazel's offer to join forces with Clan Akkaba.
Instead, she sensed Colossus' memories were tampered with and corrected
the matter with a single touch. As a result, Colossus was instantly
wracked with guilt over murdering his own wife. Monet used her abilities
to remind him he was a good, pertinent man, which allowed her to easily
recruit Peter to her cause. Colossus immediately stood up for her when
Summers attacked Monet because she wanted to "cure" him as well. Azazel
teleported himself and Scott away, leaving Colossus with his new master.
(Age of Apocalypse I#14) -
Colossus was among the first to perish when the monstrous Exterminators
arrived on Earth-295.