Question: What is the reason Bane wears a mask?
About the article "The Dark Knight Rises", section "Costume design".

Candidate passages:
Bane is a ruthless, calculating, power-hungry deity ever obsessed with expanding his power.
Since the deaths of Bhaal and Myrkul, his only true allies among the gods, he has forged alliances with the less powerful Malar, Loviatar, Mask, and Talona.
Bane holds a special enmity toward Torm, Mystra, and Cyric.
This last Bane sees as a loathsome usurper, and his entire following is mobilizing for a holy war against Cyric, the Black Sun. 
Film.
"Batman and Robin" (1997).
Bane appears in the live-action film "Batman & Robin" (1997) as a minor villain portrayed by former WCW wrestler Robert "Jeep" Swenson (in his last film before his death).
Antonio Diego (portrayed by Michael Reid MacKay) is an incarcerated serial killer who is transformed into "Bane" by mad scientist Dr. Jason Woodrue using an experimental drug called "Venom".
He is an inarticulate thug who serves as the bodyguard/henchman of Poison Ivy.
Bane is barely capable of speech, communicating mostly with growls and roars.
He is as muscular, wears a slight variation of his classic mask, and still exhibits superhuman strength as the character in the comics he was named after.
Bane is defeated when Robin and Batgirl kick the Venom tube in the back of his head and disconnect it from the rest of his body, which changes him back to his regular self.
This character was one of many aspects of the film which received negative criticism from fans and critics alike. 
In the original film, Leatherface wore three different masks: the "Killing Mask", "Old Lady Mask" and "Pretty Woman Mask".
Gunnar Hansen commented: "The reason he wore a mask, according to Tobe and Kim, was that the mask really determined his personality.
Who he wanted to be that day determined what mask he put on.
So when Drayton comes home with Sally, Leatherface is wearing the 'Old Lady Mask' and he's wearing an apron and carrying a wooden spoon, he wants to be domestic, helpful in the kitchen.
At dinner he wears a different face, the 'Pretty Woman,' which has makeup."
Also of note, the 'Pretty Woman' outfit consists of a female wig and a black suit, as Leatherface is "dressing up" for dinner, an old deep south tradition which stems from his southern upbringing, and the 'Killing Mask' is the skin mask he wears while chasing and murdering captives.
Tobe Hooper also discussed the multiple masks and dinner scene on the audio commentary for The Texas Chainsaw Massacre.
Hansen later added, "The idea of the mask is that there is no personality under the mask.
That was the idea in talking with Tobe and Kim.
When they created the character, they said he has to put on masks to express himself because he himself can't do it.
The way we tried to create him, there is nothing under the mask, which is what makes him so frightening.
"The remake offered a more concrete explanation as to why Leatherface wore masks.
As a child, a severe facial deformity ate away most of his nose and made him subject to cruel ridicule from his peers.
Prior to killing people, he wore animal hides, cloths and leather masks that covered up the bottom of his face.
Later he began to skin some of the people he killed and wore their faces as masks.
In contrast to the original film, Leatherface does not seem to have different masks for different purposes, although he does change masks occasionally.
He appears briefly without his mask on in one scene of remake, his face suffers badly from Deterioration and he is missing a portion of his nose.
According to the Making of Texas Chainsaw Massacre: The Beginning, How Thomas loses his nose is while at the slaughterhouse searching for Chrissy, destracted by Dean calling out for her, she attacks him and cuts Thomas badly on the nose with a knife she found.
The Wildstorm comics that took place in the remake's continuity had Leatherface taking off his mask when alone with his family, something that did not occur in any of the original films. 
  In the "Birds of Prey" episode "Primal Scream", a criminal bike gang known as the Animals is featured.
They wear animal masks similar to the way Black Mask and his False-Face Society did when they went on a crime spree.
Black Mask appears as a recurring villain in "The Batman", voiced by James Remar.
This version of Black Mask is a powerful crime boss with right-hand man Number One (voiced by Diedrich Bader) and a vast organization of henchmen with high-tech weapons.
What makes this Black Mask different from his comic appearances is the fact that, while he wears a mask made of some black material over his face, it is unremovable.
He has no noticeable fingerprints or any other distinguishing features either, so it is impossible to identify him.
In the episode "The Breakout", he steals a powerful shock-wave generator and holds Gotham City hostage.
To convince the city - and specifically, Commissioner James Gordon, who is dealing with his demands - he is not bluffing, he arranges a demonstration of the powerful device, which ends up destroying several blocks from its activating point.
While dealing with Gordon, he battles Batman, who defeats him and takes him to Gotham City Police Department headquarters so Gordon can question him.
However, Number One and the henchmen try to break Black Mask out of jail, first by filling Gotham PD with knockout gas, from which Black Mask escapes unaffected thanks to his mask.
Batgirl and Robin knock Black Mask unconscious, lock him in a cell and seal the precinct from Black Mask's army's siege.
Number One and the henchmen surround the police building, and eventually break Black Mask free.
However, the furious crime boss shocks Number One with his own shock gun, names a random soldier as his new Number One, and gets on a helicopter, ready to activate the generator and destroy Gotham.
However, Robin and Batgirl battle him, while Batman deactivates the device.
At the end, he is once again arrested.
In the episode "Rumors", Black Mask later reappears as one of the many villains captured by the vigilante Rumor.
At the end, he is freed only to be brought to justice upon being defeated by Batman.
In the episode "The Batman/Superman Story" (Part One), Black Mask works with Lex Luthor.
He, Clayface (Basil Karlo) and his henchmen kidnap Lois Lane, and assembles Bane and Mr.
Freeze to lure Superman into a trap and kill him.
He is foiled by the Man of Steel, along with Batman and Robin as Lois Lane trips him.
In the episode "What Goes Up...", Black Mask employs Shadow Thief in order to break out of Arkham Asylum (where the doctors there are trying to remove his mask) and steal a rare Nth element meteor in order to use the Nth element to easily rob a gem depository.
He also employs a new Number One (voiced by John Mariano) whom he later exposes to Nth powder which caused him to fly upward after he questioned how Black Mask would use the Nth Metal in his caper.
Black Mask then replaces him with an eyepatch-wearing woman who becomes the new Number One.
Batman and Robin foil his plan with Hawkman's help.
Black Mask appears in "", voiced by John DiMaggio.
This version's mouth can move its lips but his teeth remain shut when he talks.
His right-hand henchman is Taboo, and he commands the False-Face Society.
In episode "The Plague of the Prototypes!
", he and the society rob a bank when Batman leaves Gotham only to be foiled by the Caped Crusader's army of Bat-Robots.
In his second attempt, Black Mask has Tattoo reprogram the Bat-Robots to do his bidding, and uses them to nearly defeat Batman, who is later rescued by Ace the Bat-Hound and the Prototype Bat-Robot (Proto).
Black Mask later has the robots steal powerful explosives for him, and orders them to take out the rest of the False-Face Society except for Tattoo.
Black Mask plans to use the robots to set-off explosives and destroy half the city, intimidating the survivors.
However, Proto tracks down his lair, and Batman captures the villain while he, Proto and Ace take down the five robots.
When a sixth robot is unleashed, Black Mask escapes and tries to detonate it, but Proto flies off and redirects it away from the city.
Batman finds Black Mask and defeats him.
In the episode "Shadow of the Bat!
", Black Mask and the False-Face Society are seen robbing a bank until they are attacked by a vampire Batman who bites him.
It is not shown if he recovered from this condition, although the ending suggests that the episode was a dream.  
Štiavnické Bane is a village in the Banská Štiavnica District, in the Banská Bystrica Region of Slovakia.