Written on the floor of Tong Po's fighting ring is the Thai word "dai" meaning "dead".
In one particular fighting scene, one of the actors is wearing a shirt reading "Mark Dacascos Kung Fu". Mark Dacascos is an actor and martial artist who is highly trained in martial arts and gained many accolades in tournaments as a teenager in Europe, notably he was the European Kung Fu champion in the early 80s. He starred in Kickboxer 5, after Sasha Mithchell decided not to return.
A day of filming was lost due to a technical mishap with the camera. A faulty plug led to a significant amount of footage becoming overexposed, thus unusable.
After Sloan knocks out Megan during the qualifying match Bill, Tong Po's lead henchman says "Get that mouse out of here"; a reference to Michele Krasnoo's ring name.
Despite having played the role in the first two films Michel Qissi didn't return as Tong Po after director Albert Pyun denied his request for creative input.