Underworld (comics)
Encyclopedia
Underworld is a fictional character
Fictional character
A character is the representation of a person in a narrative work of art . Derived from the ancient Greek word kharaktêr , the earliest use in English, in this sense, dates from the Restoration, although it became widely used after its appearance in Tom Jones in 1749. From this, the sense of...

, a supervillain
Supervillain
A supervillain or supervillainess is a variant of the villain character type, commonly found in comic books, action movies and science fiction in various media.They are sometimes used as foils to superheroes and other fictional heroes...

 in publications from Marvel Comics
Marvel Comics
Marvel Worldwide, Inc., commonly referred to as Marvel Comics and formerly Marvel Publishing, Inc. and Marvel Comics Group, is an American company that publishes comic books and related media...

. The character first appeared in the Underworld limited series
Limited series
A limited series is a comic book series with a set number of installments. A limited series differs from an ongoing series in that the number of issues is determined before production and it differs from a one shot in that it is composed of multiple issues....

 in 2006.

Fictional character biography

Jackie Dio was a former Silvermane
Silvermane (comics)
Silvermane is a fictional Marvel Comics character. He is a supervillain and a prominent figure in the Maggia, a fictional organized crime syndicate that is analogous to the Mafia. He first appeared in The Amazing Spider-Man, Volume 1 #73...

 enforcer who was turned over to the cops by his brother Vince. He spent a decade in prison taking out his hatred for super-humans on depowered super-villains imprisoned with him. Once released he found the world had changed a lot in his absence, and that it was difficult to get re-established in the criminal world without powers. He also learned that his brother Vince had become the super-humanly strong Mr. Pain, the crime lord Owl's
Owl (comics)
The Owl is a comic book supervillain who frequently menaces Daredevil and other heroes - notably Spider-Man and the Black Cat - in Marvel Comics' universe.-Publication history:...

 head enforcer. Against his will, Jackie was covertly given several super-power upgrades himself by the Consultant, an underworld figure who specialised in granting or upgrading powers. Using these new abilities, Jackie confronted and killed Vince, taking on the alias Underworld.

Civil War

Jackie resurfaced during the Civil War
Civil War (comics)
Civil War is a 2006-2007 Marvel Comics crossover storyline built around a self-titled seven-issue limited series written by Mark Millar and penciled by Steve McNiven, which ran through various other titles published by Marvel at the time...

 crisis. He had been employed by The Kingpin
Kingpin (comics)
The Kingpin is a fictional character, a supervillain in the . Kingpin is one of the most feared and powerful crime lords in the Marvel Universe. The character is a major adversary of Daredevil, the Punisher, and Spider-Man...

 to infiltrate the rival crime lord Hammerhead's
Hammerhead (comics)
Hammerhead is a fictional character, a supervillain that has appeared in various comic book series published by Marvel Comics. He is primarily an enemy of Spider-Man and a member of organized crime who exists in Marvel's main shared universe, known as the Marvel Universe...

 syndicate. Hammerhead first described Underworld as "the new kid on the block" but quickly corrected himself and said "an old kid who just got out of stir and re-entered a new game". Hammerhead was trying to round up other villains to work for him, and villains who disagreed, like Slyde
Slyde
Slyde , is a fictional character who is a supervillain in Marvel Comics. His first appearance was in The Amazing Spider-Man #272.-Fictional character biography:...

, were killed by Underworld.

Using Underworld, Kingpin lured Hammerhead's forces into an ambush. Underworld escaped this after wounding Hammerhead in the legs, and later caught up with him when he was recovering in a hospital, shooting Hammerhead point blank in the head, seemingly killing him. Hammerhead, however, later resurfaced completely rebuilt as a powerful cyborg
Cyborg
A cyborg is a being with both biological and artificial parts. The term was coined in 1960 when Manfred Clynes and Nathan S. Kline used it in an article about the advantages of self-regulating human-machine systems in outer space. D. S...

 by and in the employ of Mr. Negative.

Powers and abilities

As a result of being exposed to a gaseous form of the Super Soldier Serum, Underworld's physical attributes are at the peak of human potential without being superhuman. He is able to lift approximately 700 lb (317.5 kg) and is stronger, faster, tougher, more agile, and has quicker reflexes & reactions than any Olympic athlete.

Due to an injection of an unknown mutagenic compound by the Consultant (disguised as an underworld doctor), Jackie also possesses a healing factor
Healing factor
A healing factor is a term used to describe the ability of some characters in fiction to recover from bodily injuries or disease at a superhuman rate...

 providing him with vastly accelerated healing abilities. It is sufficiently powerful to fully repair gunshot wounds within a matter of minutes. Unlike the healing factors of some superhumans, such as Deadpool
Deadpool (comics)
Deadpool is a fictional character, a mercenary and anti-hero appearing in comic books published by Marvel Comics. Created by artist Rob Liefeld and writer Fabian Nicieza, Deadpool first appeared in The New Mutants #98 Deadpool (Wade Winston Wilson) is a fictional character, a mercenary and...

, Jackie's healing factor is even capable of healing old scar tissue, as evidenced by the disappearance of his decade old facial scar. Jackie may also be resistant to various terrestrial diseases and possibly poisons, though this has not been shown and there is a wide variance among superhumans with healing factors in terms of these resistances.

Underworld wears a pair of unique, extremely durable sunglasses that enable him to see perfectly in the dark and can pinpoint the vulnerabilities of an opponent. The glasses interface with his specially-designed guns and provide a lock onto a target enabling the bullets they fire to change directory in flight much like a guided missile
Guided Missile
Guided Missile is a London based independent record label set up by Paul Kearney in 1994.Guided Missile has always focused on 'the underground', preferring to put out a steady flow of releases and developing the numerous GM events around London and beyond....

. These bullets are also made of adamantium enabling them to pierce virtually any substance. He wears a long, black coat composed of a titanium
Titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....

weave fabric protecting him from most conventional attacks.

Underworld is a formidable hand to hand combatant, particularly adept at using street fighting techniques. He possesses above-average intelligence and a keen mind for criminal strategy. Underworld is also an expert marksman, and his skills are further enhanced by his glasses' targeting system.
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