The Fierce Boxer (1977)

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.

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

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

While on a hunting trip in the isolated wilderness, a father and his adopted teenage son are turned into the prey of unknown assailants. They are unexpectedly joined in their fight for survival by a stranger who reveals the disturbing truth about the son's biological father, an international crime lord, and why that crime lord has sent trained assassins to kill the teenager.

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.

When Ryu returns to pay homage to his deceased mentor, Gouken, he is tormented by disturbing memories of his master's killer (Gouki). In a quest to become a true martial arts master, he sets out to hone his street fighting skills and deliver himself from the haunting legacy of the dark hadou.

After a mission goes wrong, only one of a group of mercenaries is left alive to avenge his fallen brothers.

A drifting ex-soldier turns underground fighter with the help of a just-released ex-con, pitting him against corrupt cops and hired killers now gunning for him and all those he cares about.

An aging ex-boxer gangster working as muscle for a Boston crime boss receives an upsetting diagnosis. Despite a faltering memory, he attempts to rectify the sins of his past and reconnect with his estranged children. He is determined to leave a positive legacy for his grandson, but the criminal underworld isn’t done with him and won’t loosen their grip willingly.

An amateur fighter is lured by a trafficking syndicate specializing in elite underground fighting where her brutal captor forces her to fight or face certain death.