Union Cane was a boxer from New Jersey, who was the top contender when Rocky Balboa gave up his Heavyweight title belt in the 1990 film Rocky V. Cane eventually won the belt, but was considered to be a paper champion by the public. In Rocky V, he was beaten by Tommy Gunn. In the video game scouting description, Union Cane is described as a gifted boxer with speed and power; a good all-rounder. He's also described as "sharp as a razor and extremely fit", and one who "takes all his opponents seriously, studying their boxing style before each fight".
- Union Cane was played by real-life boxer, and former NABF and NABA heavyweight champion, Mike Williams in the film Rocky V.
- After the movie was finished the real Michael Williams was suppose to face Tommy Morrison. The promoters called it "Union Cane vs. Tommy Gunn for real". However, Williams injured himself and the fight never took place.
- According to the 2002 Rocky video game, Cane was very popular in the US while Rocky was in Russia, and was nicknamed America's Hottest Fighter.
- After his loss to Tommy Gunn, Cane regained the heavyweight title that he kept until his retirement in 2000 (similar to Billy Snow). His record was 42 wins, 2 loss, and 40 KO's.
- In 1995, Tommy Gunn challenged Cane to a rematch to regain his world title, but because of Tommy's lack of training and years on inexperience, Cane knocked him out in the twelfth and final round.
- Cane only had two losses in his professional career. One in an earlier fight, and one in his first fight against Tommy Gunn. None of these losses were unavenged.
- Union Cane held the world heavyweight title until 2000, when he finally retired from boxing. After Cane's retirement, the WBC, WBA, WBO, IBF, IBO, The Ring magazine and the Lineal titles were introduced. These were won in a tournament by Mike Tyson.