Watched this last night on tubi: https://tubitv.com/movies/698707/the-ninja-squad. It was on background while gaming so it was pretty confusing. Then I was trying to figure out where it was filmed and discovered:

the Ho shot footage only comprises about 10ish minutes of The Ninja Squad, so Harrison really isn’t in this movie a whole lot. Most of this consists of scenes from the 1984 Filipino crime drama Hatulan Si… Totoy Angustia, a movie about a guy named Billy who gets into some trouble with a gangster.

…

It is the standard Godfrey Ho method at work…bad dubbing, use of some obscure movie’s footage, with Ninja action interludes. The plot revolves around our favorite ninja, Gordon, training a young disciple named Billy. The training sequence takes place during the starting credits, then the movie moves on ten years later to footage from a Filipino movie that has nothing to do with ninjas, then we return to ninja action …

https://letterboxd.com/film/the-ninja-squad/

So it’s basically a Burroughs-level cut-up. Both movies are bad but in different ways. The ninja scenes are B-movie-bad but the Filipino crime drama are bad in the ways resulting from a limited budget. In fact I think the Filipino crime drama is the more interesting of the two movies; I wouldn’t have minded seeing only that movie for its depictions of 1980s working-class Phillipines (as seen through an over-the-top gun-toting crime drama, of course.)