Question: In 2016, Dave Allen took on a Cuban boxer with what nickname?

Context paragraphs:
Arlen López: Arlen López (born 21 February 1993) is a Cuban boxer.  He won the gold medal in the men's middleweight event at the 2016 Summer Olympics.

Brin-Jonathan Butler: Brin-Jonathan Butler (born 1979) is a freelance journalist, "Amazon" interviewer, and award-winning documentary filmmaker.  His work has been published in "The Classical", "The Rumpus", "Harper's", "The Daily Beast", "Vice", "ESPN The Magazine", "The Paris Review", "The Huffington Post" and Salon.com.  His book "A Cuban Boxer's Journey" was published 2014.  "The Domino Diaries" was be published in 2015.

Dave Allen (boxer): David Allen (born 21 March 1992) is British professional boxer.  He has fought 16 times and his record stands at 12 wins, 3 defeats and 1 draw.  In 2016 he took on Dillian Whyte and Luis Ortiz, two of the well known names in heavyweight boxing.  On May 27, 2017, Allen took on Jamaica's Lenroy Thomas for the Commonwealth title.  Allen lost on a split decision with close scorecards reading 115-114, 114-115, 115-114 in favour of Thomas.

Eladio Valdés: Eladio "Black Bill" Valdés (July 1905 – May 14, 1933) was a Cuban boxer of the 1920s.

Yunieski Gonzalez: Yunieski Gonzalez (born July 5, 1985) is a Cuban boxer who fights in the light heavyweight division.  Gonzalez amassed a record of 345–27 while fighting for the Cuban amateur team before moving to Miami in 2010.  He made his professional debut later that year with a first round knock-out victory against Ramon Adorno.

Niño Valdés: Niño Valdés (born Geraldo Ramos Ponciano Valdez) (December 5, 1924 – June 3, 2001) was the Cuban heavyweight boxing champion in the 1940s and 1950s.  Statistical boxing website BoxRec rates Valdés as the 6th best Cuban boxer ever across all weight divisions.

Alexei Collado: Alexei Collado Acosta (b February 13, 1988 at Havana) is a Cuban boxer best known to win the Junior World title 2006 at flyweight.

Luis Ortiz (Cuban boxer): Luis Ortiz (born March 29, 1979) is a Cuban professional boxer.  He held the WBA interim heavyweight title from 2015 to 2016; he originally won it 2014, but this first reign was nullified via no contest when he was stripped of the title due to failing a drug test.  As an amateur, Ortiz won a silver medal at the 2005 Boxing World Cup.  Nicknamed "The Real King Kong", he is known for his size, punching power and counterpunching skills.

Esteban Gallard: Esteban Gallard (January 1, 1901 – October 7, 1929) was a Cuban boxer who found international fame under the nickname Kid Charol.  While Charol never won a world boxing title, he did obtain popularity, especially in Argentina where he lived for the last years of his life after moving there from his Cuban hometown of Sagua la Grande.  He had a relatively short boxing career before dying at age 28, holding only 45 bouts in an era when many boxers logged more than 100 career fights.

Rockin' Dave Allen: David Allen Stich, a.k.a. Rockin’ Dave Allen, a.k.a. Dave Allen, (September 27, 1941 – April 28, 1985) was an American blues guitarist, singer and songwriter.  Allen performed live throughout Texas and the Gulf Coast area from the late 1950s through the early 1980s.  He recorded for the Jin, Eric, International Artists, Rock-a-Billy and Big Orange record labels for a total of sixteen 45 sides and two vinyl LPs.  Some of this material has also appeared on compact disc anthologies by Ace Records.  Approximately eighty minutes of Allen’s recordings remain unreleased.

Supporting paragraphs: Dave Allen (boxer) Luis Ortiz (Cuban boxer)
Answer: "The Real King Kong"