Clubber Lang is real.
James `` Clubber '' Lang is a fictional character created by Sylvester Stallone for the film Rocky III , which was released in 1982 . Lang serves as the main antagonist of the film and was portrayed by Mr. T. Lang is a professional boxer fighting out of Chicago , Illinois and a one-time world heavyweight champion , having taken the title from Rocky Balboa only to lose it back to Balboa in his next fight . Mr. T ( born Lawrence Tureaud ; May 21 , 1952 ) is an American actor and retired professional wrestler known for his roles as B. A. Baracus in the 1980s television series The A-Team and as boxer Clubber Lang in the 1982 film Rocky III .