Cyber is a fictional character, a Marvel supervillain and enemy of Wolverine of the X-Men. He was created by Peter David and Sam Kieth and first seen in Marvel Comics Presents #85, September 1991 (though covered by a trench coat). He was first fully seen and named in Marvel Comics Presents #86, September 1991.
Returning from Indochina for nine months in 1959, Burr would train his finest student, Logan's son, Daken, before the boy is secretly ordered to destroy the training camp and everyone associated with it, including its commandant, Hudson. Eviscerated and shot by Daken, Burr is spared from death, as he is slated to be bonded with adamantium at some point in the near future.
Cyber later confronts the mutant team of X-Factor alongside the female criminal organization called the Hell's Belles, who are being mentored by Cyber as enforcers for an unnamed drug cartel. Shrew, a former member of the 'Belles' wishes to testify against the cartel, and Cyber and his team are ordered to silence her. Cyber defeats X-Factor's Polaris first, concerned over her magnetic powers. He manages to poison Strong Guy with his claws, and attempts to ransom the antidote in exchange for Shrew. However, Strong Guy is saved due to the scientific resources of the United States government. In a later battle in a subway train station, Shrew manages to push Cyber into the path of an oncoming train driven by X-Factor's leader, Val Cooper, and he disappeared.
He next surfaces on the distant island of Koma Koi as an agent for the mysterious death-cult known as The Coven, hired to steal a mystical gem called the Tear of Heaven, and kidnap its guardian priestess, Kayla. Wolverine, who happens to be vacationing on the island, recognizes Cyber's scent on Kayla and tracks Cyber to The Coven. The two are eventually shackled to each other by an adamantium chain, and will fight each other incessantly unless gassed unconscious or lowered into in acid pit. Crossing a rope bridge, Wolverine eventually gains the upper hand and strangles Cyber with their shackles. Hanging by his throat and lacking an adamantium windpipe, he releases the chain and disappears as he falls into the dark jungle.
Cyber is next seen back in Edinburgh, Scotland where he again engages Wolverine in battle. Recalling his part in the West Port murders long ago, he announces his intention to kill Wolverine and feed him to the deathwatch beetles to steal his adamantium skeleton. However, Cyber is unaware that the adamantium laced to Wolverine's skeleton has been recently removed by Magneto. Despite this, and despite the fact that many of Wolverine's other mutant attributes were weakened, he manages to hold his own against Cyber briefly. Cyber is momentarily distracted by the distant cannon fire of Edinburgh Castle as Wolverine extracts his bone claws and slashes Cyber across the face. Cyber, unimpressed by the attack and annoyed by this turn of events, quickly slams Wolverine to the ground and uses his foot to break the bone claws off of Wolverine's right arm before their fight is interrupted, allowing Wolverine the opportunity to escape Cyber once more. Using his amplified brain-wave tracking power, he chases the poisoned Logan to Muir Island, where he is eventually outsmarted by Kitty Pride and captured by Excalibur.
Through a currently unrevealed surgical procedure, Cyber's skin is laced with a malleable layer of the near indestructible alloy adamantium, with the exception of his face. As a result, most of Cyber's body was virtually invulnerable to physical injury. Cyber's adamantium skin has proven able to withstand all attacks against it, even by weapons composed of adamantium itself.
Housed within each of Cyber's fingers is a retractable adamantium claw. Each talon was tipped in either powerful hallucinogens or poisons that have proven capable of incapacitating Wolverine before his mutant healing factor could filter them out. The potent toxins are specifically designed to affect Wolverine and are fatal to ordinary humans within seconds. Cyber's adamantium claws were also capable of cutting almost any known material. The known exceptions are adamantium itself and Captain America's shield, which is composed of the only substance in the Marvel Universe known to be even harder than adamantium.
Cyber also possesses an accelerated healing factor similar to Wolverine's, which enabled him to survive the mysterious process that grafted adamantium to his skin. However, Cyber's healing factor, while similar to Wolverine's, wasn't nearly as efficient. After Wolverine gouged out Cyber's left eye in combat, he was unable to regenerate it and had replaced the eye with an artificial implant, where Wolverine has regenerated missing eyes on multiple occasions. A side effect of this accelerated healing is a dramatically altered aging process. Despite his chronological age, Cyber possesses the appearance and vitality of a man in his physical prime. Another effect of Cyber's healing factor was an augmentation to his musculature resulting in the production of considerably less intramuscular lactic acid than ordinary humans. As a result, Cyber possesses superhuman levels of stamina in all physical activities.
Cyber's final ability is an unusual psionic ability that allows him to track specific brain wave patterns across great distances. The exact limit of Cyber's range is unknown; however, it was greatly amplified after his over-exposure to the hallucinogens that coat his claws. Cyber has recently claimed he can track brain wave patterns from any location on earth, and was even able to allow his consciousness to leave his body entirely. It was this ability that allowed Cyber to survive in astral form following the attack by the Dark Riders.
Cyber is an excellent hand-to-hand combatant. He is well known in military circles, himself a veteran of World War I and World War II, and throughout the criminal underworld, where he often hires himself out as a special enforcer or mentor. He is a talented, though quite sadistic and murderous, teacher of unarmed combat methods.
Cyber's consciousness has recently taken possession of the body of a large, muscular mutant with child-like intelligence named Milo Gunderson. Milo is a mutant possessing some degree of superhuman strength, the limits of which are not known. However, his strength is sufficient to decapitate a fully grown horse with a single punch. Whether or not Milo's body possesses any other natural superhuman abilities is unknown at this time.
Cyber has recently undergone a process in which adamantium has been laced to Milo's skin, with only his face left uncovered, as well as claws on his fingertips, although it is unknown if these new talons are retractable. However, exactly how Milo's body survived the process is not known. As a result, his body is highly resistant to all forms of injury, including assaults from weapons composed of adamantium. Milo's abilities have one big downside: the mutant factor that made his body develop so fast and strong puts a lot of stress on his heart, which makes him dependent on the medicine his mother was giving him. After suffering from a heart attack, he received a "pacemaker", mounted to his chest, fabricated from the deadly, radioactive element carbonadium.