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Sabretooth appeared in the 1977 comic book called X-Men.
When Victor Creed's mutation first manifested, he accidentally killed his brother over a piece of pie. His father confined him to a cellar and would systematically pull out Victor's "devil teeth" in an attempt to purge the boy of his "demons". Victor was chained like an animal in the family cellar for years until one day he chewed off his own hand in order to break free, subsequently murdering his father. Although he would later claim to have killed his mother as well, he actually spared her, and made sure she lived a comfortable life, until she was diagnosed with cancer and confined to a hospital, where she was killed by a member of the Red Right Hand.
Freed from his parents, Victor was unleashed upon society. At age thirteen, he reportedly rampaged across three Canadian provinces and killed at least three police officers. According to Creed, he remained in Canada and, at about fifteen, worked for the railroad, laying down rail from Calgary up to the Yukon. Among the workers on the line was a belligerent older man who delighted in picking on the teenage Creed. Though the man "had a hundred pounds on him", Creed gutted him from crotch to Adam's apple with his claws.
For years, Victor was beating and torturing his brother, Saul. on each one of his birthdays. Until one day his sister, Clara, told him that his brother had died and was now free from him.
Victor quickly learned that his brother died at the hands of the man named Logan. He then decided to get his revenge against his brother's killer and went after him. In 1909, he discovered that a serial killer killed three people in as many months. After finding an unconscious Logan in the middle of a crime scene, Victor believed that Logan was the mysterious serial killer the police were after.
Before the police arrived, Victor snatched the unconscious Logan from the crime scene and took him to the Ravencroft Institute in Westchester County where he was working as Nathaniel Essex' assistant. Essex lobotomized Logan, which put him in a comatose state. He then proceeded to cut Logan's left arm off, while Victor was enjoying seeing Logan suffer. One of the doctors, Claudia Russell, was able to free Logan and tried to help him escape, but on their way out the duo was confronted by Victor.
Victor threw Logan away and confronted Claudia, but Logan’s healing factor kicked in and started to heal his brain, awakening him from his comatose state. Logan thrust his claws into Victor's head through his lower jaw, but Victor was able to throw him away once again. Knowing that Logan had no chance against Victor in his condition, Claudia begged him to escape while Victor was injured. Despite still being in a feral state because of his brain injury, Logan understood and agreed to escape.
Before Victor could go after Logan, Claudia revealed to him that Logan was not responsible for the murders, which had happened during a full moon. She was actually the killer, but it was an accident. She then transformed into a werewolf and attacked the injured Victor. Victor was saved by Essex, resulting in Claudia's capture. Victor and Essex later experimented on Claudia and killed her.
In the following years, Victor - now known as Sabretooth - supposedly joined the organization of the mysterious Romulus, and moved to Tokyo, Japan, where he murdered several women. But one night during one of his rampages, he once again faced Logan. Logan had been extorted by the ninja sect known as the Hand into fighting Sabretooth.
During their fight, Logan was able to cut off one of Sabretooth's hands with his sword. Sabretooth was able to reattach it thanks to his healing factor, to the surprise of Logan. Sabretooth was then defeated by Logan, who impaled him with his sword. But before Logan could finish him, their fight was stopped by Romulus who knocked Logan out.
Under Romulus' orders, Sabretooth then tracked Logan to a frontier community in the Canadian Rockies. There he brutally attacked Silver Fox, Logan's lover. He raped her and left her for dead, the first of many birthday "surprises" from Victor to come. Enraged, Logan battled Sabretooth in a bar, only to be defeated. Sabretooth then manipulated a feral, mindless Logan into believing that the people of a nearby town had ordered Silver Fox's death. This prompted Logan to slaughter the inhabitants of the town, persuading him that "the townspeople are afraid of you--they don't want you around. So, they got rid of the one thing keeping you here."
Later on, in 1912, during Silas Burr's trial, a gun battle broke out and Burr was taken away by one of the bailiffs, a man eventually known as Sabretooth. Sabretooth, under the orders of Romulus, took him up to Canada, where he met a man who needed his services, a man by the name of Hudson.
In 1938, Victor was present in Nanjing alongside Ogun and watched General Matsui enter the city.
Sabretooth later served in the American military during the Korean War, moving to the island of Madripoor after his time in the service.
In 1959, during his time in Madripoor, Nick Fury found Victor and recruited him into his black ops team known as the Avengers. Sabretooth also had some as yet unknown history with fellow recruit Kraven the Hunter in Africa, prompting the latter to shoot him on sight. The two put aside their differences long enough to complete their assigned mission. This mission involved traveling to Helsingborg, Sweden in order to stop the imposter Red Skull from reforming the Nazis into a Fourth Reich and completing his research on a new super-soldier formula. Sabretooth walked into the path of an oncoming Nazi truck, slashing the driver to ribbons when he got out to check on him. The group then used the hijacked truck to gain entry into the Skull's castle headquarters. Kraven accidentally shot Sabretooth in the back during the ensuing battle as he was trying to target the Red Skull. Creed soon healed, but his bloodlust cost the group valuable information as he beheaded the Red Skull impostor before he could be properly interrogated. Fury took the Skull's briefcase and told the team that he would meet up with them later before disappearing for over a month. When he reappeared, he invited the Avengers members to the Stork Club in New York City to celebrate a job well done before all of the members went their separate ways.
After dinner, Sabretooth began hitchhiking out of New York on his way to Toronto. He was soon picked up by a driver in a pickup truck who had a skull logo hanging from his rearview mirror. The man turned out to be a werewolf whom Sabretooth had to fight to survive, though the creature was eventually run over by another car driving down the highway. Fury soon reunited his team when it became apparent that several other members were similarly attacked. The attacks were orchestrated by an organization known as ICON and their leader Geoffrey Sydenham to get the Nazi hunters out of the way before continuing their plan to start World War Three with Russia. Sabretooth proved himself invaluable, if somewhat unpredictable, to the Avengers' attempt to stop ICON, fighting their forces in the South China Sea, Madripoor, Wakanda, and Washington, D.C.. His bloodlust again became apparent when Fury allowed him to kill all of the members of the Ubermadchen after they had revealed what they knew of ICON's plot. After ICON had been defeated, Creed, along with the rest of the team, received pardons for any activities that they were wanted for by the government. As the group disbanded, Creed headed for Los Angeles by train with his teammates Dominic Fortune and the Blonde Phantom.
Sometime in the mid-60s Creed, now codenamed Sabretooth, was a member of a special black-ops group, along with Wolverine and Maverick. One of their missions was to steal the Carbonadium Synthesizer from Russia, which led them to face Soviet mutant Omega Red, managing to force him into hibernation. Sabretooth was a cold operative, willing to sell out his teammates to save himself and the mission.
While on a mission in Germany, Creed was assigned to guard Leni Zauber, a German spy. The two became intimate, and Zauber eventually gave birth to a child whom Creed never knew until years later, just as he didn't know that Leni was actually the shapeshifting mutant Mystique. Creed was also abducted by the original Weapon X Program, which was attempting to create super-powered sleeper agents. Part of the program was brainwashing and memory-implanting, performed by the Psi-Borg using elaborate movie sets. It seemed that unlike some of the other recruits, Sabretooth already had his claws and anti-aging factor. However, he did not receive the adamantium bonding that Wolverine did.
In 1968 Creed was serving in Vietnam. He indulged his murderous urges, killing a number of prostitutes. While in Saigon a man known as the "White Devil" was rumored to be involved in the disappearance of soldiers and locals. Creed was offered a job leading his own team of enforcers, which he happily accepted.
After the disbandment of Team X, Logan and Victor reunited as friends, when Logan learned of anti-mutant forces within the government. Victor and Logan formed a team of rebel mutants, and Victor fell in love with a mutant named Holo. This led him to begin to become a better man, but on their last mission together, he was manipulated into killing her. This act led him down a dark path which would last almost a century.