Undisputed II: Last Man Standing

Undisputed II: Last Man Standing is the 2006 sequel to the film Undisputed; it was a B-movie directed by Isaac Florentine, as opposed to Walter Hill.

In this film, main character George "Iceman" Chambers was upgraded from a Villain Protagonist to an Anti-Hero, and was played by Michael Jai White. In this particular setting, Mafia-types run the prison fighting organization of a particular Russian prison and make money off of it. They frame Chambers for drug use so he will be sent to jail and they can pit him against their own resident champion, Yuri Boyka (played by Scott Adkins). For a while, Chambers refuses to fight Boyka, but they promise he will be freed. So he agrees. As you can see, it's fairly similar to the plot of the first movie. This film was given a much better reception, however, because of its far better characters, cinematography, writing, fight choreography...pretty much everything really.

It was followed by two sequels -- 2010's Undisputed III: Redemption and 2016's Boyka: Undisputed.