Question: What is the real name of the convicted Soviet KGB spy in Bridge of Spies?

Context paragraphs:
List of Chairmen of the KGB: The Chairman of the KGB was the head of the Soviet KGB.  He was assisted by one or two First Deputy Chairmen, and four to six Deputy Chairmen.  And he was the head of the Collegium of the KGB— which consisted of the Chairman, deputy chairmen, Directorate Chiefs, and one or two republic-level KGB organization chairmen— who affected key policy decisions.

Alexander Vassiliev: Alexander Vassiliev (Russian: Александр Васильев ; born 1962) is a Russian journalist, writer, and espionage historian living in London who is a subject matter expert in the Soviet KGB and Russian SVR.  A former officer in the Soviet Committee for State Security (KGB), he is known for his two books based upon KGB archival documents: "Spies: The Rise and Fall of the KGB in America", co-authored with John Earl Haynes and Harvey Klehr, and "The Haunted Wood: Soviet Espionage in America: the Stalin Era," co-authored with Allen Weinstein.

Rudolf Abel: Rudolf Ivanovich Abel (Russian: Рудольф Иванович Абель ), real name Vilyam "Willie" Genrikhovich Fisher (Вильям "Вилли" Генрихович Фишер), (July 11, 1903 – November 15, 1971) was a Soviet intelligence officer.  He adopted his alias when arrested on charges of conspiracy by FBI agents in 1957.

Engelbert Broda: Engelbert Broda (29 August 1910 in Vienna – 26 October 1983 in Hainburg an der Donau) was an Austrian chemist and physicist suspected by some to have been a KGB spy code-named "Eric", who could have been a main Soviet source of information on British and American nuclear research.

África de las Heras: África de las Heras Gavilán (Ceuta, 26 April 1909 – Moscow, 8 March 1988) was a Spanish Communist, naturalized Soviet citizen, and KGB Spy who went by the code name "Patria", but also used the names "María Luisa de las Heras de Darbat","María de la Sierra","Patricia", "Ivonne", "María de las Heras", "Znoi" and "María Pavlovna".  Originally a member of the Communist Party of Spain, de las Heras participated in various Soviet intelligence operations both during and after the Spanish Civil War.

Anatoliy Golitsyn: Anatoliy Mikhaylovich Golitsyn CBE (Russian: Анатолий Михайлович Голицын ; August 25, 1926 – December 29, 2008) was a Soviet KGB defector and author of two books about the long-term deception strategy of the KGB leadership.  He was born in Piryatin, Ukrainian SSR.  He provided "a wide range of intelligence to the CIA on the operations of most of the 'Lines' (departments) at the Helsinki and other residencies, as well as KGB methods of recruiting and running agents."  He is an Honorary Commander of the Order of the British Empire (CBE) and, as late as 1984, was an American citizen.

KGB Security Troops: The KGB Security Troops were the uniformed paramilitary troops of the Soviet KGB which engaged in military-related activities that are not mentioned in legislation governing the Soviet Armed forces.  The KGB controlled elite units that guarded the highest party officials and stood a continuous ceremonial guard at the Lenin Mausoleum.  The special KGB signal troops also operated communications linking the party with the Ministry of Defense and the major territorial commands.  Another KGB armed force guarded sensitive military, scientific, and industrial installations in the Soviet Union and, until the late 1960s, controlled Soviet nuclear warhead stockpiles.  They also guarded government installations (nuclear weapons, etc.), operated the Moscow VIP subway (Russian journalists have reported that the existence of Metro-2 is neither confirmed nor denied by the Federal Security Service of the Russian Federation (FSB) or the Moscow Metro administration.) , and secured Government–Party telephone system.

Reino Gikman: Reino Gikman (allegedly born March 27, 1930, Ino, Terijoki, Russia) was the alias used by an undercover agent for the Soviet KGB who operated in Western Europe.  Gikman used a Finnish passport and spent several years in Finland developing his illegal residence cover by posing as a Finn.  The KGB was able to create fake Finnish citizenships by inserting fake births into the church records with the help of a priest of the Finnish Orthodox Church.  Gikman's fake personality was however the result of the theft in 1952 of four registry books of church records from the Othodox repository in Kuopio.  He received his first Finnish passport at a Finnish embassy, before ever entering Finland.  He moved to Finland in 1966, and held various jobs in Helsinki in the 1960s, working among others in the "Suomalainen Kirjakauppa" bookstore.  In 1968 he married a "Martta Nieminen", a holder of a Finnish passport and also a suspected Soviet spy.  Their son was born in Düsseldorf in 1969.

Russians in Pakistan: Russians in Pakistan are a small expatriate community and consist entirely of students, employees, families and diplomats stationed inside the country.  During the nine-year Soviet occupation of Afghanistan, Moscow had attempted to establish a commercial and industrial presence in Pakistan, by opening an Aeroflot office and setting up subsidiaries of steel and oil industries as well as a tractor factory.  With only 56 Soviets in Pakistan in 1972, their numbers had suddenly jumped to 1,374 by 1980.  In his book, the French political expert Roland Jacquard mentions that Pakistani authorities, who were already opposed to the Soviet presence in Afghanistan, became alarmed by the burgeoning increase of the population and entailed the Soviets to reduce their diplomatic presence in Islamabad by half.  It has been alleged that during the time period, there was a strong presence of Soviet KGB agents in the country, who carried out spy work primarily from Peshawar and Islamabad in tandem with several hundred Afghan WAD agents, and monitored Pakistani aid to the Afghan mujahideen.  According to Jacquard, one of the Soviet Union's objectives was to bring Pakistan under its sphere of influence and even when a sizeable number of Soviet diplomats were removed from operations in the country, there were approximately one-third who still worked for the KGB spy agency.

Bridge of Spies (film): Bridge of Spies is a 2015 historical drama legal thriller film directed and co-produced by Steven Spielberg, written by Matt Charman, Ethan and Joel Coen and stars Tom Hanks, Mark Rylance, Amy Ryan, and Alan Alda.  Set during the Cold War, the film tells the story of lawyer James B. Donovan, who is entrusted with negotiating the release of Francis Gary Powers—a U.S. Air Force pilot whose U-2 spy plane was shot down over the Soviet Union in 1960—in exchange for Rudolf Abel, a convicted Soviet KGB spy held under the custody of the United States, whom he represented at trial.  The name of the film refers to the Glienicke Bridge, which connects Potsdam with Berlin, where the prisoner exchange took place.  The film was an international co-production of the United States and Germany.

Supporting paragraphs: Bridge of Spies (film) Rudolf Abel
Answer: Vilyam "Willie" Genrikhovich Fisher