Doctor Double X 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...

 in the DC Comics

DC Comics

DC Comics, Inc. is one of the largest and most successful companies operating in the market for American comic books and related media. It is the publishing unit of DC Entertainment a company of Warner Bros. Entertainment, which itself is owned by Time Warner...

 universe

DC Universe

The DC Universe is the shared universe where most of the comic stories published by DC Comics take place. The fictional characters Superman, Batman and Wonder Woman are well-known superheroes from this universe. Note that in context, "DC Universe" is usually used to refer to the main DC continuity...

. The character is 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...

 who has fought the Batman

Batman

Batman is a fictional character created by the artist Bob Kane and writer Bill Finger. A comic book superhero, Batman first appeared in Detective Comics #27 , and since then has appeared primarily in publications by DC Comics...

 and Robin

Robin (comics)

Robin is the name of several fictional characters appearing in comic books published by DC Comics, originally created by Bob Kane, Bill Finger and Jerry Robinson, as a junior counterpart to DC Comics superhero Batman...

 several times in Gotham City

Gotham City

Gotham City is a fictional U.S. city appearing in DC Comics, best known as the home of Batman. Batman's place of residence was first identified as Gotham City in Batman #4 . Gotham City is strongly inspired by Trenton, Ontario's history, location, atmosphere, and various architectural styles...

.

Fictional character biography

Dr. Simon Ecks discovered that human
aura

Aura (paranormal)

In parapsychology and many forms of spiritual practice, an aura is a field of subtle, luminous radiation surrounding a person or object . The depiction of such an aura often connotes a person of particular power or holiness. Sometimes, however, it is said that all living things and all objects...

s could be enhanced to function outside of the body. When Ecks created an energy-duplicate of himself, the introverted scientist's unstable mind became dominated by the doppelgänger

Doppelgänger

In fiction and folklore, a doppelgänger is a paranormal double of a living person, typically representing evil or misfortune...

 he named Double X. The villain fought the Batman several times, only to be returned to Arkham Asylum

Arkham Asylum

The Elizabeth Arkham Asylum for the Criminally Insane, commonly referred to simply as Arkham Asylum, is a fictional psychiatric hospital in the DC Comics Universe, usually appearing in stories featuring Batman...

 time and again. Once, he traded opponents with Flash

Flash (comics)

The Flash is a name shared by several fictional comic book superheroes from the DC Comics universe. Created by writer Gardner Fox and artist Harry Lampert, the original Flash first appeared in Flash Comics #1 ....

 foe Rainbow Raider

Rainbow Raider

Rainbow Raider is a fictional supervillain in the DC Comics universe. His real name is a pun based on the acronym "ROYGBIV" , a mnemonic for the colors of a rainbow.He first appeared in The Flash vol...

.

Doctor Double X was later seen as a guest at the San Francisco sci-fi convention.

Powers and abilities

Doctor Double X's energy-duplicate shares the consciousness of Simon Ecks, but can also act alone. The duplicate's powers of flight

Flight

Flight is the process by which an object moves either through an atmosphere or beyond it by generating lift or propulsive thrust, or aerostatically using buoyancy, or by simple ballistic movement....

, energy blasts, and strength

Physical strength

Physical strength is the ability of a person or animal to exert force on physical objects using muscles. Increasing physical strength is the goal of strength training.-Overview:...

 have at times required Batman to seek help in defeating the villain. Double X requires regular infusions of electrical energy to sustain itself or it will lie dormant in Ecks' body.

Television

• Doctor Double X appears in the Batman: The Brave and the Bold
  Batman: The Brave and the Bold
  Batman: The Brave and the Bold is an American animated television series based in part on the DC Comics series The Brave and the Bold which features two or more super heroes coming together to solve a crime or foil a super villain...
  
  episode "A Bat Divided" voiced by Ron Perlman
  Ron Perlman
  Ronald N. "Ron" Perlman is an American television, film and voice over actor. He is known for having played Vincent in the TV series Beauty and the Beast , a Deathstroke figure known as Slade in the animated series Teen Titans, Clarence "Clay" Morrow in Sons of Anarchy, the comic book character...
  
  . Doctor Double X tries to create a radioactive meltdown to increase his powers, but unknowingly creates Firestorm
  Firestorm (comics)
  Firestorm is the name of several comic book superheroes published by DC Comics. Ronnie Raymond and Martin Stein, the first Firestorm, debuted in Firestorm, the Nuclear Man #1 , and was created by Gerry Conway and Al Milgrom. Martin Stein, by himself as Firestorm, debuted in Firestorm the Nuclear...
  
  after he combines Ronnie Raymond and Jason Rusch. Unknown to everyone else, even him, he also split Batman into three parts. Doctor Double X later kidnaps Firestorm to absorb his radioactive energy, but the three Batmen rescue Firestorm and battle and defeat Double X. He later makes a cameo in "Joker: The Vile and the Villainous" where he was seen at the bar where the bad guys hang out.