A Brotherhood of Heroes (1980)

A former fighter reluctantly returns to the life she abandoned in order to help her sister survive the sadistic world of illegal fighting and the maniac who runs it.

In this sequel, Scott Wylde, an American kickboxer, must go to Cambodia to rescue his Vietnamese girlfriend from Russian and Vietnamese troops.

Three middle aged men polish their martial arts skills to avenge their fallen master.

Two feuding brothers (one a policeman, the other a martial arts expert) of different political views, join forces to avenge the death of their father, a retired agent, killed by the mafia.

Picking up after the events of Never Back Down 2, former MMA champion Case Walker is on the comeback trail to become champion once again.

Two warring gang families (one African-American, the other Chinese) maneuver for bragging rights to the Oakland, California, docks. Hang Sing and Trish O'Day uncover a trail of deceit that leaves most of the warring factions dead … or worse!

The eldest son of a ruthlessly tough MMA champion must fight his way out of the abusive cycle his father has continued.

The Accident Man is back, and this time he must best the top assassins in the world to protect the ungrateful son of a mafia boss, save the life of his only friend and rekindle his relationship with his maniacal father figure.

Kevin Hart - playing a version of himself - is on a death-defying quest to become an action star. And with a little help from John Travolta, Nathalie Emmanuel, and Josh Hartnett - he just might pull it off.

A former youth boxing champion, Jimmy McCabe is a man in search of hope but looking in all the wrong places. When he hits rock bottom he turns to his childhood boxing club and the only family he has left: gym owner Bill corner man Eddie and promoter Joe. Back in training, years after anyone thought he was a contender, he risks his life, as he tries to stand tall and regain his place in the world.