When cast, Lou Ferrigno did extensive research on underground cage match style fighting, soldier life after injuries, and P.T.S.D., but Reb Brown did not.
Lou Ferrigno and Reb Brown both played Marvel Comics superheroes. Lou Ferrigno played The Incredible Hulk and Reb Brown played Captain America.
Danny Trejo makes an uncredited appearance as a bodyguard.
Al Leong and James Shigeta both appeared in "Die Hard" (1988).
Until the start of the Avengers movie series in 2012, this was the only film to feature actors that have played both Captain America and the Hulk.